Home / 661,882.40-992,823.60-485,626.40

Finding the Fourth Proportional to 661,882.40, 992,823.60 and 485,626.40

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Solution

The fourth proportional to 661,882.40, 992,823.60 and 485,626.40 is: 728,439.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    661,882.40 : 992,823.60 = 485,626.40 : x
  2. Step 2: Convert to fraction form
    661,882.40/992,823.60 = 485,626.40/x
  3. Step 3: Cross multiply
    661,882.40x = 992,823.60 × 485,626.40
  4. Step 4: Simplify right side
    661,882.40x = 482,141,350,703.04
  5. Step 5: Solve for x
    x = 482,141,350,703.04/661,882.40
  6. Step 6: Final answer
    x = 728,439.60

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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.