Home / 458,556.90-687,252.15-408,401.70

Finding the Fourth Proportional to 458,556.90, 687,252.15 and 408,401.70

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Solution

The fourth proportional to 458,556.90, 687,252.15 and 408,401.70 is: 612,083.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,556.90 : 687,252.15 = 408,401.70 : x
  2. Step 2: Convert to fraction form
    458,556.90/687,252.15 = 408,401.70/x
  3. Step 3: Cross multiply
    458,556.90x = 687,252.15 × 408,401.70
  4. Step 4: Simplify right side
    458,556.90x = 280,674,946,388.66
  5. Step 5: Solve for x
    x = 280,674,946,388.66/458,556.90
  6. Step 6: Final answer
    x = 612,083.14

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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.