Home / 672,079.40-1,008,119.10-432,930.95

Finding the Fourth Proportional to 672,079.40, 1,008,119.10 and 432,930.95

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Solution

The fourth proportional to 672,079.40, 1,008,119.10 and 432,930.95 is: 649,396.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,079.40 : 1,008,119.10 = 432,930.95 : x
  2. Step 2: Convert to fraction form
    672,079.40/1,008,119.10 = 432,930.95/x
  3. Step 3: Cross multiply
    672,079.40x = 1,008,119.10 × 432,930.95
  4. Step 4: Simplify right side
    672,079.40x = 436,445,959,676.15
  5. Step 5: Solve for x
    x = 436,445,959,676.15/672,079.40
  6. Step 6: Final answer
    x = 649,396.43

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Double scale
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Similar ratio
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1.5x scale

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.