Home / 609,214.20-912,822.52-431,401.92

Finding the Fourth Proportional to 609,214.20, 912,822.52 and 431,401.92

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Solution

The fourth proportional to 609,214.20, 912,822.52 and 431,401.92 is: 646,395.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,214.20 : 912,822.52 = 431,401.92 : x
  2. Step 2: Convert to fraction form
    609,214.20/912,822.52 = 431,401.92/x
  3. Step 3: Cross multiply
    609,214.20x = 912,822.52 × 431,401.92
  4. Step 4: Simplify right side
    609,214.20x = 393,793,387,747.24
  5. Step 5: Solve for x
    x = 393,793,387,747.24/609,214.20
  6. Step 6: Final answer
    x = 646,395.62

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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.