Home / 458,204.90-686,724.15-408,049.70

Finding the Fourth Proportional to 458,204.90, 686,724.15 and 408,049.70

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Solution

The fourth proportional to 458,204.90, 686,724.15 and 408,049.70 is: 611,555.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,204.90 : 686,724.15 = 408,049.70 : x
  2. Step 2: Convert to fraction form
    458,204.90/686,724.15 = 408,049.70/x
  3. Step 3: Cross multiply
    458,204.90x = 686,724.15 × 408,049.70
  4. Step 4: Simplify right side
    458,204.90x = 280,217,583,390.26
  5. Step 5: Solve for x
    x = 280,217,583,390.26/458,204.90
  6. Step 6: Final answer
    x = 611,555.19

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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.