Home / 739,672.20-1,109,508.30-420,807.60

Finding the Fourth Proportional to 739,672.20, 1,109,508.30 and 420,807.60

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Solution

The fourth proportional to 739,672.20, 1,109,508.30 and 420,807.60 is: 631,211.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    739,672.20 : 1,109,508.30 = 420,807.60 : x
  2. Step 2: Convert to fraction form
    739,672.20/1,109,508.30 = 420,807.60/x
  3. Step 3: Cross multiply
    739,672.20x = 1,109,508.30 × 420,807.60
  4. Step 4: Simplify right side
    739,672.20x = 466,889,524,903.08
  5. Step 5: Solve for x
    x = 466,889,524,903.08/739,672.20
  6. Step 6: Final answer
    x = 631,211.40

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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.