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Finding the Fourth Proportional to 866,645.10, 1,300,420.92 and 354,690.27

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Solution

The fourth proportional to 866,645.10, 1,300,420.92 and 354,690.27 is: 532,220.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    866,645.10 : 1,300,420.92 = 354,690.27 : x
  2. Step 2: Convert to fraction form
    866,645.10/1,300,420.92 = 354,690.27/x
  3. Step 3: Cross multiply
    866,645.10x = 1,300,420.92 × 354,690.27
  4. Step 4: Simplify right side
    866,645.10x = 461,246,647,228.45
  5. Step 5: Solve for x
    x = 461,246,647,228.45/866,645.10
  6. Step 6: Final answer
    x = 532,220.91

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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.