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Finding the Fourth Proportional to 1,289,613.80, 1,933,499.10 and 579,060.20

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Solution

The fourth proportional to 1,289,613.80, 1,933,499.10 and 579,060.20 is: 868,176.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,613.80 : 1,933,499.10 = 579,060.20 : x
  2. Step 2: Convert to fraction form
    1,289,613.80/1,933,499.10 = 579,060.20/x
  3. Step 3: Cross multiply
    1,289,613.80x = 1,933,499.10 × 579,060.20
  4. Step 4: Simplify right side
    1,289,613.80x = 1,119,612,375,545.82
  5. Step 5: Solve for x
    x = 1,119,612,375,545.82/1,289,613.80
  6. Step 6: Final answer
    x = 868,176.48

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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.