Home / 719,044.80-992,287.20-396,766.92

Finding the Fourth Proportional to 719,044.80, 992,287.20 and 396,766.92

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Solution

The fourth proportional to 719,044.80, 992,287.20 and 396,766.92 is: 547,541.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,044.80 : 992,287.20 = 396,766.92 : x
  2. Step 2: Convert to fraction form
    719,044.80/992,287.20 = 396,766.92/x
  3. Step 3: Cross multiply
    719,044.80x = 992,287.20 × 396,766.92
  4. Step 4: Simplify right side
    719,044.80x = 393,706,736,099.42
  5. Step 5: Solve for x
    x = 393,706,736,099.42/719,044.80
  6. Step 6: Final answer
    x = 547,541.32

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Half scale
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Double scale
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Similar ratio
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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.