Home / 722,200.10-996,635.52-399,910.18

Finding the Fourth Proportional to 722,200.10, 996,635.52 and 399,910.18

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Solution

The fourth proportional to 722,200.10, 996,635.52 and 399,910.18 is: 551,875.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    722,200.10 : 996,635.52 = 399,910.18 : x
  2. Step 2: Convert to fraction form
    722,200.10/996,635.52 = 399,910.18/x
  3. Step 3: Cross multiply
    722,200.10x = 996,635.52 × 399,910.18
  4. Step 4: Simplify right side
    722,200.10x = 398,564,690,197.59
  5. Step 5: Solve for x
    x = 398,564,690,197.59/722,200.10
  6. Step 6: Final answer
    x = 551,875.71

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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.