Home / 438,430.10-657,645.15-413,935.70

Finding the Fourth Proportional to 438,430.10, 657,645.15 and 413,935.70

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Solution

The fourth proportional to 438,430.10, 657,645.15 and 413,935.70 is: 620,903.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,430.10 : 657,645.15 = 413,935.70 : x
  2. Step 2: Convert to fraction form
    438,430.10/657,645.15 = 413,935.70/x
  3. Step 3: Cross multiply
    438,430.10x = 657,645.15 × 413,935.70
  4. Step 4: Simplify right side
    438,430.10x = 272,222,805,516.86
  5. Step 5: Solve for x
    x = 272,222,805,516.86/438,430.10
  6. Step 6: Final answer
    x = 620,903.55

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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.