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Finding the Fourth Proportional to 657,479.20, 986,607.60 and 433,487.20

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Solution

The fourth proportional to 657,479.20, 986,607.60 and 433,487.20 is: 650,487.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,479.20 : 986,607.60 = 433,487.20 : x
  2. Step 2: Convert to fraction form
    657,479.20/986,607.60 = 433,487.20/x
  3. Step 3: Cross multiply
    657,479.20x = 986,607.60 × 433,487.20
  4. Step 4: Simplify right side
    657,479.20x = 427,681,766,022.72
  5. Step 5: Solve for x
    x = 427,681,766,022.72/657,479.20
  6. Step 6: Final answer
    x = 650,487.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.