Home / 609,218.20-912,828.52-431,405.92

Finding the Fourth Proportional to 609,218.20, 912,828.52 and 431,405.92

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Solution

The fourth proportional to 609,218.20, 912,828.52 and 431,405.92 is: 646,401.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    609,218.20 : 912,828.52 = 431,405.92 : x
  2. Step 2: Convert to fraction form
    609,218.20/912,828.52 = 431,405.92/x
  3. Step 3: Cross multiply
    609,218.20x = 912,828.52 × 431,405.92
  4. Step 4: Simplify right side
    609,218.20x = 393,799,627,472.84
  5. Step 5: Solve for x
    x = 393,799,627,472.84/609,218.20
  6. Step 6: Final answer
    x = 646,401.61

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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.