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Finding the Fourth Proportional to 657,759.88, 907,711.46 and 355,953.88

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Solution

The fourth proportional to 657,759.88, 907,711.46 and 355,953.88 is: 491,217.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,759.88 : 907,711.46 = 355,953.88 : x
  2. Step 2: Convert to fraction form
    657,759.88/907,711.46 = 355,953.88/x
  3. Step 3: Cross multiply
    657,759.88x = 907,711.46 × 355,953.88
  4. Step 4: Simplify right side
    657,759.88x = 323,103,416,107.47
  5. Step 5: Solve for x
    x = 323,103,416,107.47/657,759.88
  6. Step 6: Final answer
    x = 491,217.88

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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.