Home / 919,686.26-1,379,736.97-280,047.18

Finding the Fourth Proportional to 919,686.26, 1,379,736.97 and 280,047.18

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Solution

The fourth proportional to 919,686.26, 1,379,736.97 and 280,047.18 is: 420,133.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,686.26 : 1,379,736.97 = 280,047.18 : x
  2. Step 2: Convert to fraction form
    919,686.26/1,379,736.97 = 280,047.18/x
  3. Step 3: Cross multiply
    919,686.26x = 1,379,736.97 × 280,047.18
  4. Step 4: Simplify right side
    919,686.26x = 386,391,440,691.56
  5. Step 5: Solve for x
    x = 386,391,440,691.56/919,686.26
  6. Step 6: Final answer
    x = 420,133.97

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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.