Home / 758,659.32-1,138,158.48-285,348.78

Finding the Fourth Proportional to 758,659.32, 1,138,158.48 and 285,348.78

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Solution

The fourth proportional to 758,659.32, 1,138,158.48 and 285,348.78 is: 428,086.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,659.32 : 1,138,158.48 = 285,348.78 : x
  2. Step 2: Convert to fraction form
    758,659.32/1,138,158.48 = 285,348.78/x
  3. Step 3: Cross multiply
    758,659.32x = 1,138,158.48 × 285,348.78
  4. Step 4: Simplify right side
    758,659.32x = 324,772,133,714.65
  5. Step 5: Solve for x
    x = 324,772,133,714.65/758,659.32
  6. Step 6: Final answer
    x = 428,086.92

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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.