Home / 860,863.80-1,288,233.90-749,764.20

Finding the Fourth Proportional to 860,863.80, 1,288,233.90 and 749,764.20

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Solution

The fourth proportional to 860,863.80, 1,288,233.90 and 749,764.20 is: 1,121,979.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,863.80 : 1,288,233.90 = 749,764.20 : x
  2. Step 2: Convert to fraction form
    860,863.80/1,288,233.90 = 749,764.20/x
  3. Step 3: Cross multiply
    860,863.80x = 1,288,233.90 × 749,764.20
  4. Step 4: Simplify right side
    860,863.80x = 965,871,659,446.38
  5. Step 5: Solve for x
    x = 965,871,659,446.38/860,863.80
  6. Step 6: Final answer
    x = 1,121,979.64

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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.