Home / 769,440.16-1,061,882.36-425,268.72

Finding the Fourth Proportional to 769,440.16, 1,061,882.36 and 425,268.72

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Solution

The fourth proportional to 769,440.16, 1,061,882.36 and 425,268.72 is: 586,901.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,440.16 : 1,061,882.36 = 425,268.72 : x
  2. Step 2: Convert to fraction form
    769,440.16/1,061,882.36 = 425,268.72/x
  3. Step 3: Cross multiply
    769,440.16x = 1,061,882.36 × 425,268.72
  4. Step 4: Simplify right side
    769,440.16x = 451,585,352,027.78
  5. Step 5: Solve for x
    x = 451,585,352,027.78/769,440.16
  6. Step 6: Final answer
    x = 586,901.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.