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Finding the Fourth Proportional to 868,487.58, 1,300,806.57 and 667,327.26

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Solution

The fourth proportional to 868,487.58, 1,300,806.57 and 667,327.26 is: 999,511.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,487.58 : 1,300,806.57 = 667,327.26 : x
  2. Step 2: Convert to fraction form
    868,487.58/1,300,806.57 = 667,327.26/x
  3. Step 3: Cross multiply
    868,487.58x = 1,300,806.57 × 667,327.26
  4. Step 4: Simplify right side
    868,487.58x = 868,063,684,148.10
  5. Step 5: Solve for x
    x = 868,063,684,148.10/868,487.58
  6. Step 6: Final answer
    x = 999,511.91

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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.