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Finding the Fourth Proportional to 577,661.20, 866,491.80 and 486,422.80

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Solution

The fourth proportional to 577,661.20, 866,491.80 and 486,422.80 is: 729,634.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,661.20 : 866,491.80 = 486,422.80 : x
  2. Step 2: Convert to fraction form
    577,661.20/866,491.80 = 486,422.80/x
  3. Step 3: Cross multiply
    577,661.20x = 866,491.80 × 486,422.80
  4. Step 4: Simplify right side
    577,661.20x = 421,481,367,533.04
  5. Step 5: Solve for x
    x = 421,481,367,533.04/577,661.20
  6. Step 6: Final answer
    x = 729,634.20

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Similar ratio
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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.