Home / 719,001.41-992,221.14-396,711.47

Finding the Fourth Proportional to 719,001.41, 992,221.14 and 396,711.47

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Solution

The fourth proportional to 719,001.41, 992,221.14 and 396,711.47 is: 547,461.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,001.41 : 992,221.14 = 396,711.47 : x
  2. Step 2: Convert to fraction form
    719,001.41/992,221.14 = 396,711.47/x
  3. Step 3: Cross multiply
    719,001.41x = 992,221.14 × 396,711.47
  4. Step 4: Simplify right side
    719,001.41x = 393,625,510,982.70
  5. Step 5: Solve for x
    x = 393,625,510,982.70/719,001.41
  6. Step 6: Final answer
    x = 547,461.39

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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.