Home / 812,113.11-1,120,702.51-449,529.19

Finding the Fourth Proportional to 812,113.11, 1,120,702.51 and 449,529.19

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Solution

The fourth proportional to 812,113.11, 1,120,702.51 and 449,529.19 is: 620,342.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,113.11 : 1,120,702.51 = 449,529.19 : x
  2. Step 2: Convert to fraction form
    812,113.11/1,120,702.51 = 449,529.19/x
  3. Step 3: Cross multiply
    812,113.11x = 1,120,702.51 × 449,529.19
  4. Step 4: Simplify right side
    812,113.11x = 503,788,491,551.27
  5. Step 5: Solve for x
    x = 503,788,491,551.27/812,113.11
  6. Step 6: Final answer
    x = 620,342.76

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Half scale
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Double scale
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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.