Home / 2,790,423.60-4,185,635.40-1,987,357.20

Finding the Fourth Proportional to 2,790,423.60, 4,185,635.40 and 1,987,357.20

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Solution

The fourth proportional to 2,790,423.60, 4,185,635.40 and 1,987,357.20 is: 2,981,035.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,790,423.60 : 4,185,635.40 = 1,987,357.20 : x
  2. Step 2: Convert to fraction form
    2,790,423.60/4,185,635.40 = 1,987,357.20/x
  3. Step 3: Cross multiply
    2,790,423.60x = 4,185,635.40 × 1,987,357.20
  4. Step 4: Simplify right side
    2,790,423.60x = 8,318,352,648,764.88
  5. Step 5: Solve for x
    x = 8,318,352,648,764.88/2,790,423.60
  6. Step 6: Final answer
    x = 2,981,035.80

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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.