Home / 879,785.70-1,321,282.35-769,560.90

Finding the Fourth Proportional to 879,785.70, 1,321,282.35 and 769,560.90

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Solution

The fourth proportional to 879,785.70, 1,321,282.35 and 769,560.90 is: 1,155,744.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,785.70 : 1,321,282.35 = 769,560.90 : x
  2. Step 2: Convert to fraction form
    879,785.70/1,321,282.35 = 769,560.90/x
  3. Step 3: Cross multiply
    879,785.70x = 1,321,282.35 × 769,560.90
  4. Step 4: Simplify right side
    879,785.70x = 1,016,807,234,420.12
  5. Step 5: Solve for x
    x = 1,016,807,234,420.12/879,785.70
  6. Step 6: Final answer
    x = 1,155,744.22

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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.