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Finding the Fourth Proportional to 866,937.60, 1,300,382.10 and 393,622.20

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Solution

The fourth proportional to 866,937.60, 1,300,382.10 and 393,622.20 is: 590,422.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,937.60 : 1,300,382.10 = 393,622.20 : x
  2. Step 2: Convert to fraction form
    866,937.60/1,300,382.10 = 393,622.20/x
  3. Step 3: Cross multiply
    866,937.60x = 1,300,382.10 × 393,622.20
  4. Step 4: Simplify right side
    866,937.60x = 511,859,263,042.62
  5. Step 5: Solve for x
    x = 511,859,263,042.62/866,937.60
  6. Step 6: Final answer
    x = 590,422.27

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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.