Home / 661,966.20-992,949.30-396,545.40

Finding the Fourth Proportional to 661,966.20, 992,949.30 and 396,545.40

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Solution

The fourth proportional to 661,966.20, 992,949.30 and 396,545.40 is: 594,818.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,966.20 : 992,949.30 = 396,545.40 : x
  2. Step 2: Convert to fraction form
    661,966.20/992,949.30 = 396,545.40/x
  3. Step 3: Cross multiply
    661,966.20x = 992,949.30 × 396,545.40
  4. Step 4: Simplify right side
    661,966.20x = 393,749,477,348.22
  5. Step 5: Solve for x
    x = 393,749,477,348.22/661,966.20
  6. Step 6: Final answer
    x = 594,818.10

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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.