Home / 721,948.52-996,277.02-399,651.80

Finding the Fourth Proportional to 721,948.52, 996,277.02 and 399,651.80

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Solution

The fourth proportional to 721,948.52, 996,277.02 and 399,651.80 is: 551,512.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,948.52 : 996,277.02 = 399,651.80 : x
  2. Step 2: Convert to fraction form
    721,948.52/996,277.02 = 399,651.80/x
  3. Step 3: Cross multiply
    721,948.52x = 996,277.02 × 399,651.80
  4. Step 4: Simplify right side
    721,948.52x = 398,163,904,341.64
  5. Step 5: Solve for x
    x = 398,163,904,341.64/721,948.52
  6. Step 6: Final answer
    x = 551,512.88

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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.