Home / 1,200,487.20-1,656,815.28-691,288.80

Finding the Fourth Proportional to 1,200,487.20, 1,656,815.28 and 691,288.80

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Solution

The fourth proportional to 1,200,487.20, 1,656,815.28 and 691,288.80 is: 954,060.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,200,487.20 : 1,656,815.28 = 691,288.80 : x
  2. Step 2: Convert to fraction form
    1,200,487.20/1,656,815.28 = 691,288.80/x
  3. Step 3: Cross multiply
    1,200,487.20x = 1,656,815.28 × 691,288.80
  4. Step 4: Simplify right side
    1,200,487.20x = 1,145,337,846,732.86
  5. Step 5: Solve for x
    x = 1,145,337,846,732.86/1,200,487.20
  6. Step 6: Final answer
    x = 954,060.86

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.