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Finding the Fourth Proportional to 657,543.60, 907,458.12 and 371,088.72

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Solution

The fourth proportional to 657,543.60, 907,458.12 and 371,088.72 is: 512,129.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,543.60 : 907,458.12 = 371,088.72 : x
  2. Step 2: Convert to fraction form
    657,543.60/907,458.12 = 371,088.72/x
  3. Step 3: Cross multiply
    657,543.60x = 907,458.12 × 371,088.72
  4. Step 4: Simplify right side
    657,543.60x = 336,747,472,204.41
  5. Step 5: Solve for x
    x = 336,747,472,204.41/657,543.60
  6. Step 6: Final answer
    x = 512,129.50

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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.