Home / 721,922.52-996,241.02-399,625.80

Finding the Fourth Proportional to 721,922.52, 996,241.02 and 399,625.80

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Solution

The fourth proportional to 721,922.52, 996,241.02 and 399,625.80 is: 551,476.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,922.52 : 996,241.02 = 399,625.80 : x
  2. Step 2: Convert to fraction form
    721,922.52/996,241.02 = 399,625.80/x
  3. Step 3: Cross multiply
    721,922.52x = 996,241.02 × 399,625.80
  4. Step 4: Simplify right side
    721,922.52x = 398,123,614,610.32
  5. Step 5: Solve for x
    x = 398,123,614,610.32/721,922.52
  6. Step 6: Final answer
    x = 551,476.93

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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.