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Finding the Fourth Proportional to 868,489.08, 1,300,808.82 and 667,328.76

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Solution

The fourth proportional to 868,489.08, 1,300,808.82 and 667,328.76 is: 999,514.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    868,489.08 : 1,300,808.82 = 667,328.76 : x
  2. Step 2: Convert to fraction form
    868,489.08/1,300,808.82 = 667,328.76/x
  3. Step 3: Cross multiply
    868,489.08x = 1,300,808.82 × 667,328.76
  4. Step 4: Simplify right side
    868,489.08x = 868,067,136,847.66
  5. Step 5: Solve for x
    x = 868,067,136,847.66/868,489.08
  6. Step 6: Final answer
    x = 999,514.16

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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.