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Finding the Fourth Proportional to 657,420.65, 907,240.86 and 363,070.90

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Solution

The fourth proportional to 657,420.65, 907,240.86 and 363,070.90 is: 501,038.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,420.65 : 907,240.86 = 363,070.90 : x
  2. Step 2: Convert to fraction form
    657,420.65/907,240.86 = 363,070.90/x
  3. Step 3: Cross multiply
    657,420.65x = 907,240.86 × 363,070.90
  4. Step 4: Simplify right side
    657,420.65x = 329,392,753,288.87
  5. Step 5: Solve for x
    x = 329,392,753,288.87/657,420.65
  6. Step 6: Final answer
    x = 501,038.04

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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.