Home / 758,641.28-1,138,005.75-285,330.74

Finding the Fourth Proportional to 758,641.28, 1,138,005.75 and 285,330.74

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Solution

The fourth proportional to 758,641.28, 1,138,005.75 and 285,330.74 is: 428,012.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,641.28 : 1,138,005.75 = 285,330.74 : x
  2. Step 2: Convert to fraction form
    758,641.28/1,138,005.75 = 285,330.74/x
  3. Step 3: Cross multiply
    758,641.28x = 1,138,005.75 × 285,330.74
  4. Step 4: Simplify right side
    758,641.28x = 324,708,017,081.73
  5. Step 5: Solve for x
    x = 324,708,017,081.73/758,641.28
  6. Step 6: Final answer
    x = 428,012.59

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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.