Home / 1,216,795,239.78-1,679,248,230.22-680,942,373.20

Finding the Fourth Proportional to 1,216,795,239.78, 1,679,248,230.22 and 680,942,373.20

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Solution

The fourth proportional to 1,216,795,239.78, 1,679,248,230.22 and 680,942,373.20 is: 939,740,095.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,795,239.78 : 1,679,248,230.22 = 680,942,373.20 : x
  2. Step 2: Convert to fraction form
    1,216,795,239.78/1,679,248,230.22 = 680,942,373.20/x
  3. Step 3: Cross multiply
    1,216,795,239.78x = 1,679,248,230.22 × 680,942,373.20
  4. Step 4: Simplify right side
    1,216,795,239.78x = 1,143,471,275,077,906,816
  5. Step 5: Solve for x
    x = 1,143,471,275,077,906,816/1,216,795,239.78
  6. Step 6: Final answer
    x = 939,740,095.70

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Half scale
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Double scale
Find fourth proportional to 1,216,795,240.78, 1,679,248,231.60 and 680,942,374.20
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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.