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Finding the Fourth Proportional to 657,903.47, 907,856.12 and 371,451.83

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Solution

The fourth proportional to 657,903.47, 907,856.12 and 371,451.83 is: 512,574.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,903.47 : 907,856.12 = 371,451.83 : x
  2. Step 2: Convert to fraction form
    657,903.47/907,856.12 = 371,451.83/x
  3. Step 3: Cross multiply
    657,903.47x = 907,856.12 × 371,451.83
  4. Step 4: Simplify right side
    657,903.47x = 337,224,815,293.44
  5. Step 5: Solve for x
    x = 337,224,815,293.44/657,903.47
  6. Step 6: Final answer
    x = 512,574.92

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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.