Home / 1,391,572.20-2,087,139.60-492,885.30

Finding the Fourth Proportional to 1,391,572.20, 2,087,139.60 and 492,885.30

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Solution

The fourth proportional to 1,391,572.20, 2,087,139.60 and 492,885.30 is: 739,250.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,391,572.20 : 2,087,139.60 = 492,885.30 : x
  2. Step 2: Convert to fraction form
    1,391,572.20/2,087,139.60 = 492,885.30/x
  3. Step 3: Cross multiply
    1,391,572.20x = 2,087,139.60 × 492,885.30
  4. Step 4: Simplify right side
    1,391,572.20x = 1,028,720,427,887.88
  5. Step 5: Solve for x
    x = 1,028,720,427,887.88/1,391,572.20
  6. Step 6: Final answer
    x = 739,250.49

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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.