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Finding the Fourth Proportional to 657,793.10, 907,754.46 and 355,987.10

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Solution

The fourth proportional to 657,793.10, 907,754.46 and 355,987.10 is: 491,262.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,793.10 : 907,754.46 = 355,987.10 : x
  2. Step 2: Convert to fraction form
    657,793.10/907,754.46 = 355,987.10/x
  3. Step 3: Cross multiply
    657,793.10x = 907,754.46 × 355,987.10
  4. Step 4: Simplify right side
    657,793.10x = 323,148,877,727.47
  5. Step 5: Solve for x
    x = 323,148,877,727.47/657,793.10
  6. Step 6: Final answer
    x = 491,262.19

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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.