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Finding the Fourth Proportional to 657,285.38, 907,053.82 and 355,479.38

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Solution

The fourth proportional to 657,285.38, 907,053.82 and 355,479.38 is: 490,561.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,285.38 : 907,053.82 = 355,479.38 : x
  2. Step 2: Convert to fraction form
    657,285.38/907,053.82 = 355,479.38/x
  3. Step 3: Cross multiply
    657,285.38x = 907,053.82 × 355,479.38
  4. Step 4: Simplify right side
    657,285.38x = 322,438,924,136.26
  5. Step 5: Solve for x
    x = 322,438,924,136.26/657,285.38
  6. Step 6: Final answer
    x = 490,561.54

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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.