Home / 758,650.32-1,138,144.95-285,339.78

Finding the Fourth Proportional to 758,650.32, 1,138,144.95 and 285,339.78

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Solution

The fourth proportional to 758,650.32, 1,138,144.95 and 285,339.78 is: 428,073.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,650.32 : 1,138,144.95 = 285,339.78 : x
  2. Step 2: Convert to fraction form
    758,650.32/1,138,144.95 = 285,339.78/x
  3. Step 3: Cross multiply
    758,650.32x = 1,138,144.95 × 285,339.78
  4. Step 4: Simplify right side
    758,650.32x = 324,758,029,641.11
  5. Step 5: Solve for x
    x = 324,758,029,641.11/758,650.32
  6. Step 6: Final answer
    x = 428,073.41

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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.