Home / 721,869.39-993,897.20-635,767.47

Finding the Fourth Proportional to 721,869.39, 993,897.20 and 635,767.47

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Solution

The fourth proportional to 721,869.39, 993,897.20 and 635,767.47 is: 875,348.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,869.39 : 993,897.20 = 635,767.47 : x
  2. Step 2: Convert to fraction form
    721,869.39/993,897.20 = 635,767.47/x
  3. Step 3: Cross multiply
    721,869.39x = 993,897.20 × 635,767.47
  4. Step 4: Simplify right side
    721,869.39x = 631,887,505,105.25
  5. Step 5: Solve for x
    x = 631,887,505,105.25/721,869.39
  6. Step 6: Final answer
    x = 875,348.80

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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.