Home / 458,836.61-687,478.20-280,972.14

Finding the Fourth Proportional to 458,836.61, 687,478.20 and 280,972.14

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Solution

The fourth proportional to 458,836.61, 687,478.20 and 280,972.14 is: 420,982.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,836.61 : 687,478.20 = 280,972.14 : x
  2. Step 2: Convert to fraction form
    458,836.61/687,478.20 = 280,972.14/x
  3. Step 3: Cross multiply
    458,836.61x = 687,478.20 × 280,972.14
  4. Step 4: Simplify right side
    458,836.61x = 193,162,221,057.35
  5. Step 5: Solve for x
    x = 193,162,221,057.35/458,836.61
  6. Step 6: Final answer
    x = 420,982.59

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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.