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Finding the Fourth Proportional to 657,354.75, 907,151.18 and 355,548.75

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Solution

The fourth proportional to 657,354.75, 907,151.18 and 355,548.75 is: 490,658.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,354.75 : 907,151.18 = 355,548.75 : x
  2. Step 2: Convert to fraction form
    657,354.75/907,151.18 = 355,548.75/x
  3. Step 3: Cross multiply
    657,354.75x = 907,151.18 × 355,548.75
  4. Step 4: Simplify right side
    657,354.75x = 322,536,466,332.28
  5. Step 5: Solve for x
    x = 322,536,466,332.28/657,354.75
  6. Step 6: Final answer
    x = 490,658.15

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Double scale
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1.5x scale

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.