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Finding the Fourth Proportional to 616,041.60, 924,811.20 and 391,401.60

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Solution

The fourth proportional to 616,041.60, 924,811.20 and 391,401.60 is: 587,578.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,041.60 : 924,811.20 = 391,401.60 : x
  2. Step 2: Convert to fraction form
    616,041.60/924,811.20 = 391,401.60/x
  3. Step 3: Cross multiply
    616,041.60x = 924,811.20 × 391,401.60
  4. Step 4: Simplify right side
    616,041.60x = 361,972,583,377.92
  5. Step 5: Solve for x
    x = 361,972,583,377.92/616,041.60
  6. Step 6: Final answer
    x = 587,578.15

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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.