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Finding the Fourth Proportional to 866,999.20, 1,300,498.80 and 762,023.20

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Solution

The fourth proportional to 866,999.20, 1,300,498.80 and 762,023.20 is: 1,143,034.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,999.20 : 1,300,498.80 = 762,023.20 : x
  2. Step 2: Convert to fraction form
    866,999.20/1,300,498.80 = 762,023.20/x
  3. Step 3: Cross multiply
    866,999.20x = 1,300,498.80 × 762,023.20
  4. Step 4: Simplify right side
    866,999.20x = 991,010,257,172.16
  5. Step 5: Solve for x
    x = 991,010,257,172.16/866,999.20
  6. Step 6: Final answer
    x = 1,143,034.80

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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.