Home / 661,569,815.40-992,354,723.10-443,324,711.40

Finding the Fourth Proportional to 661,569,815.40, 992,354,723.10 and 443,324,711.40

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Solution

The fourth proportional to 661,569,815.40, 992,354,723.10 and 443,324,711.40 is: 664,987,067.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,569,815.40 : 992,354,723.10 = 443,324,711.40 : x
  2. Step 2: Convert to fraction form
    661,569,815.40/992,354,723.10 = 443,324,711.40/x
  3. Step 3: Cross multiply
    661,569,815.40x = 992,354,723.10 × 443,324,711.40
  4. Step 4: Simplify right side
    661,569,815.40x = 439,935,371,224,734,400
  5. Step 5: Solve for x
    x = 439,935,371,224,734,400/661,569,815.40
  6. Step 6: Final answer
    x = 664,987,067.10

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.