Home / 1,216,795,237.79-1,679,248,227.47-680,942,371.21

Finding the Fourth Proportional to 1,216,795,237.79, 1,679,248,227.47 and 680,942,371.21

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Solution

The fourth proportional to 1,216,795,237.79, 1,679,248,227.47 and 680,942,371.21 is: 939,740,092.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,795,237.79 : 1,679,248,227.47 = 680,942,371.21 : x
  2. Step 2: Convert to fraction form
    1,216,795,237.79/1,679,248,227.47 = 680,942,371.21/x
  3. Step 3: Cross multiply
    1,216,795,237.79x = 1,679,248,227.47 × 680,942,371.21
  4. Step 4: Simplify right side
    1,216,795,237.79x = 1,143,471,269,856,008,320
  5. Step 5: Solve for x
    x = 1,143,471,269,856,008,320/1,216,795,237.79
  6. Step 6: Final answer
    x = 939,740,092.95

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Half scale
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Double scale
Find fourth proportional to 1,216,795,238.79, 1,679,248,228.85 and 680,942,372.21
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.