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Finding the Fourth Proportional to 577,612.20, 866,418.30 and 486,373.80

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Solution

The fourth proportional to 577,612.20, 866,418.30 and 486,373.80 is: 729,560.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,612.20 : 866,418.30 = 486,373.80 : x
  2. Step 2: Convert to fraction form
    577,612.20/866,418.30 = 486,373.80/x
  3. Step 3: Cross multiply
    577,612.20x = 866,418.30 × 486,373.80
  4. Step 4: Simplify right side
    577,612.20x = 421,403,160,960.54
  5. Step 5: Solve for x
    x = 421,403,160,960.54/577,612.20
  6. Step 6: Final answer
    x = 729,560.70

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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.