Home / 743,908.60-1,115,862.90-445,310.20

Finding the Fourth Proportional to 743,908.60, 1,115,862.90 and 445,310.20

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Solution

The fourth proportional to 743,908.60, 1,115,862.90 and 445,310.20 is: 667,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    743,908.60 : 1,115,862.90 = 445,310.20 : x
  2. Step 2: Convert to fraction form
    743,908.60/1,115,862.90 = 445,310.20/x
  3. Step 3: Cross multiply
    743,908.60x = 1,115,862.90 × 445,310.20
  4. Step 4: Simplify right side
    743,908.60x = 496,905,131,171.58
  5. Step 5: Solve for x
    x = 496,905,131,171.58/743,908.60
  6. Step 6: Final answer
    x = 667,965.30

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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.