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Finding the Fourth Proportional to 744,279, 1,116,117.84 and 288,630.31

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Solution

The fourth proportional to 744,279, 1,116,117.84 and 288,630.31 is: 432,828.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,279 : 1,116,117.84 = 288,630.31 : x
  2. Step 2: Convert to fraction form
    744,279/1,116,117.84 = 288,630.31/x
  3. Step 3: Cross multiply
    744,279x = 1,116,117.84 × 288,630.31
  4. Step 4: Simplify right side
    744,279x = 322,145,438,155.73
  5. Step 5: Solve for x
    x = 322,145,438,155.73/744,279
  6. Step 6: Final answer
    x = 432,828.87

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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.