Home / 458,557.40-687,252.90-408,402.20

Finding the Fourth Proportional to 458,557.40, 687,252.90 and 408,402.20

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Solution

The fourth proportional to 458,557.40, 687,252.90 and 408,402.20 is: 612,083.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,557.40 : 687,252.90 = 408,402.20 : x
  2. Step 2: Convert to fraction form
    458,557.40/687,252.90 = 408,402.20/x
  3. Step 3: Cross multiply
    458,557.40x = 687,252.90 × 408,402.20
  4. Step 4: Simplify right side
    458,557.40x = 280,675,596,316.38
  5. Step 5: Solve for x
    x = 280,675,596,316.38/458,557.40
  6. Step 6: Final answer
    x = 612,083.89

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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.