Home / 1,298,520.40-1,947,780.60-800,165.20

Finding the Fourth Proportional to 1,298,520.40, 1,947,780.60 and 800,165.20

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Solution

The fourth proportional to 1,298,520.40, 1,947,780.60 and 800,165.20 is: 1,200,247.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,298,520.40 : 1,947,780.60 = 800,165.20 : x
  2. Step 2: Convert to fraction form
    1,298,520.40/1,947,780.60 = 800,165.20/x
  3. Step 3: Cross multiply
    1,298,520.40x = 1,947,780.60 × 800,165.20
  4. Step 4: Simplify right side
    1,298,520.40x = 1,558,546,253,355.12
  5. Step 5: Solve for x
    x = 1,558,546,253,355.12/1,298,520.40
  6. Step 6: Final answer
    x = 1,200,247.80

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Similar ratio
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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.