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Finding the Fourth Proportional to 657,160.43, 906,881.47 and 355,354.43

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Solution

The fourth proportional to 657,160.43, 906,881.47 and 355,354.43 is: 490,389.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,160.43 : 906,881.47 = 355,354.43 : x
  2. Step 2: Convert to fraction form
    657,160.43/906,881.47 = 355,354.43/x
  3. Step 3: Cross multiply
    657,160.43x = 906,881.47 × 355,354.43
  4. Step 4: Simplify right side
    657,160.43x = 322,264,342,426.62
  5. Step 5: Solve for x
    x = 322,264,342,426.62/657,160.43
  6. Step 6: Final answer
    x = 490,389.15

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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.