Home / 879,782.20-1,321,277.10-769,557.40

Finding the Fourth Proportional to 879,782.20, 1,321,277.10 and 769,557.40

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Solution

The fourth proportional to 879,782.20, 1,321,277.10 and 769,557.40 is: 1,155,738.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    879,782.20 : 1,321,277.10 = 769,557.40 : x
  2. Step 2: Convert to fraction form
    879,782.20/1,321,277.10 = 769,557.40/x
  3. Step 3: Cross multiply
    879,782.20x = 1,321,277.10 × 769,557.40
  4. Step 4: Simplify right side
    879,782.20x = 1,016,798,569,755.54
  5. Step 5: Solve for x
    x = 1,016,798,569,755.54/879,782.20
  6. Step 6: Final answer
    x = 1,155,738.97

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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.