Home / 5,180,231.40-7,765,915.92-1,987,648.80

Finding the Fourth Proportional to 5,180,231.40, 7,765,915.92 and 1,987,648.80

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Solution

The fourth proportional to 5,180,231.40, 7,765,915.92 and 1,987,648.80 is: 2,979,772.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,180,231.40 : 7,765,915.92 = 1,987,648.80 : x
  2. Step 2: Convert to fraction form
    5,180,231.40/7,765,915.92 = 1,987,648.80/x
  3. Step 3: Cross multiply
    5,180,231.40x = 7,765,915.92 × 1,987,648.80
  4. Step 4: Simplify right side
    5,180,231.40x = 15,435,913,459,288.90
  5. Step 5: Solve for x
    x = 15,435,913,459,288.90/5,180,231.40
  6. Step 6: Final answer
    x = 2,979,772.96

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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.