Home / 758,656.32-1,138,153.98-285,345.78

Finding the Fourth Proportional to 758,656.32, 1,138,153.98 and 285,345.78

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Solution

The fourth proportional to 758,656.32, 1,138,153.98 and 285,345.78 is: 428,082.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,656.32 : 1,138,153.98 = 285,345.78 : x
  2. Step 2: Convert to fraction form
    758,656.32/1,138,153.98 = 285,345.78/x
  3. Step 3: Cross multiply
    758,656.32x = 1,138,153.98 × 285,345.78
  4. Step 4: Simplify right side
    758,656.32x = 324,767,435,183.20
  5. Step 5: Solve for x
    x = 324,767,435,183.20/758,656.32
  6. Step 6: Final answer
    x = 428,082.42

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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.