Home / 1,112,338.91-1,668,508.34-513,122.78

Finding the Fourth Proportional to 1,112,338.91, 1,668,508.34 and 513,122.78

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Solution

The fourth proportional to 1,112,338.91, 1,668,508.34 and 513,122.78 is: 769,684.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112,338.91 : 1,668,508.34 = 513,122.78 : x
  2. Step 2: Convert to fraction form
    1,112,338.91/1,668,508.34 = 513,122.78/x
  3. Step 3: Cross multiply
    1,112,338.91x = 1,668,508.34 × 513,122.78
  4. Step 4: Simplify right side
    1,112,338.91x = 856,149,626,965.83
  5. Step 5: Solve for x
    x = 856,149,626,965.83/1,112,338.91
  6. Step 6: Final answer
    x = 769,684.15

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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.