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Finding the Fourth Proportional to 657,355.72, 987,767.41 and 353,974.18

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Solution

The fourth proportional to 657,355.72, 987,767.41 and 353,974.18 is: 531,894.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,355.72 : 987,767.41 = 353,974.18 : x
  2. Step 2: Convert to fraction form
    657,355.72/987,767.41 = 353,974.18/x
  3. Step 3: Cross multiply
    657,355.72x = 987,767.41 × 353,974.18
  4. Step 4: Simplify right side
    657,355.72x = 349,644,159,535.93
  5. Step 5: Solve for x
    x = 349,644,159,535.93/657,355.72
  6. Step 6: Final answer
    x = 531,894.91

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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.