Home / 1,287,152.91-1,776,355.92-743,311.62

Finding the Fourth Proportional to 1,287,152.91, 1,776,355.92 and 743,311.62

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Solution

The fourth proportional to 1,287,152.91, 1,776,355.92 and 743,311.62 is: 1,025,819.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,152.91 : 1,776,355.92 = 743,311.62 : x
  2. Step 2: Convert to fraction form
    1,287,152.91/1,776,355.92 = 743,311.62/x
  3. Step 3: Cross multiply
    1,287,152.91x = 1,776,355.92 × 743,311.62
  4. Step 4: Simplify right side
    1,287,152.91x = 1,320,385,996,591.79
  5. Step 5: Solve for x
    x = 1,320,385,996,591.79/1,287,152.91
  6. Step 6: Final answer
    x = 1,025,819.07

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.