Home / 769,825.20-1,155,393.90-344,016.30

Finding the Fourth Proportional to 769,825.20, 1,155,393.90 and 344,016.30

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Solution

The fourth proportional to 769,825.20, 1,155,393.90 and 344,016.30 is: 516,317.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,825.20 : 1,155,393.90 = 344,016.30 : x
  2. Step 2: Convert to fraction form
    769,825.20/1,155,393.90 = 344,016.30/x
  3. Step 3: Cross multiply
    769,825.20x = 1,155,393.90 × 344,016.30
  4. Step 4: Simplify right side
    769,825.20x = 397,474,334,520.57
  5. Step 5: Solve for x
    x = 397,474,334,520.57/769,825.20
  6. Step 6: Final answer
    x = 516,317.65

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1.5x scale

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.