Home / 5,320,432.60-7,980,648.90-3,189,419.80

Finding the Fourth Proportional to 5,320,432.60, 7,980,648.90 and 3,189,419.80

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Solution

The fourth proportional to 5,320,432.60, 7,980,648.90 and 3,189,419.80 is: 4,784,129.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,320,432.60 : 7,980,648.90 = 3,189,419.80 : x
  2. Step 2: Convert to fraction form
    5,320,432.60/7,980,648.90 = 3,189,419.80/x
  3. Step 3: Cross multiply
    5,320,432.60x = 7,980,648.90 × 3,189,419.80
  4. Step 4: Simplify right side
    5,320,432.60x = 25,453,639,618,508.22
  5. Step 5: Solve for x
    x = 25,453,639,618,508.22/5,320,432.60
  6. Step 6: Final answer
    x = 4,784,129.70

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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.