Home / 721,936.77-996,280.62-399,652.25

Finding the Fourth Proportional to 721,936.77, 996,280.62 and 399,652.25

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Solution

The fourth proportional to 721,936.77, 996,280.62 and 399,652.25 is: 551,524.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,936.77 : 996,280.62 = 399,652.25 : x
  2. Step 2: Convert to fraction form
    721,936.77/996,280.62 = 399,652.25/x
  3. Step 3: Cross multiply
    721,936.77x = 996,280.62 × 399,652.25
  4. Step 4: Simplify right side
    721,936.77x = 398,165,784,934.30
  5. Step 5: Solve for x
    x = 398,165,784,934.30/721,936.77
  6. Step 6: Final answer
    x = 551,524.46

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Double scale
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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.