Home / 744,138.30-1,116,466.65-323,715.90

Finding the Fourth Proportional to 744,138.30, 1,116,466.65 and 323,715.90

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Solution

The fourth proportional to 744,138.30, 1,116,466.65 and 323,715.90 is: 485,686.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    744,138.30 : 1,116,466.65 = 323,715.90 : x
  2. Step 2: Convert to fraction form
    744,138.30/1,116,466.65 = 323,715.90/x
  3. Step 3: Cross multiply
    744,138.30x = 1,116,466.65 × 323,715.90
  4. Step 4: Simplify right side
    744,138.30x = 361,418,006,424.74
  5. Step 5: Solve for x
    x = 361,418,006,424.74/744,138.30
  6. Step 6: Final answer
    x = 485,686.61

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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.