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Finding the Fourth Proportional to 657,277.86, 907,044.05 and 355,471.86

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Solution

The fourth proportional to 657,277.86, 907,044.05 and 355,471.86 is: 490,551.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,277.86 : 907,044.05 = 355,471.86 : x
  2. Step 2: Convert to fraction form
    657,277.86/907,044.05 = 355,471.86/x
  3. Step 3: Cross multiply
    657,277.86x = 907,044.05 × 355,471.86
  4. Step 4: Simplify right side
    657,277.86x = 322,428,635,555.43
  5. Step 5: Solve for x
    x = 322,428,635,555.43/657,277.86
  6. Step 6: Final answer
    x = 490,551.49

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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.