Home / 780,165.20-1,170,247.80-721,845.20

Finding the Fourth Proportional to 780,165.20, 1,170,247.80 and 721,845.20

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Solution

The fourth proportional to 780,165.20, 1,170,247.80 and 721,845.20 is: 1,082,767.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    780,165.20 : 1,170,247.80 = 721,845.20 : x
  2. Step 2: Convert to fraction form
    780,165.20/1,170,247.80 = 721,845.20/x
  3. Step 3: Cross multiply
    780,165.20x = 1,170,247.80 × 721,845.20
  4. Step 4: Simplify right side
    780,165.20x = 844,737,757,240.56
  5. Step 5: Solve for x
    x = 844,737,757,240.56/780,165.20
  6. Step 6: Final answer
    x = 1,082,767.80

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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.