Home / 758,961.60-1,138,442.40-285,753.12

Finding the Fourth Proportional to 758,961.60, 1,138,442.40 and 285,753.12

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Solution

The fourth proportional to 758,961.60, 1,138,442.40 and 285,753.12 is: 428,629.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    758,961.60 : 1,138,442.40 = 285,753.12 : x
  2. Step 2: Convert to fraction form
    758,961.60/1,138,442.40 = 285,753.12/x
  3. Step 3: Cross multiply
    758,961.60x = 1,138,442.40 × 285,753.12
  4. Step 4: Simplify right side
    758,961.60x = 325,313,467,740.29
  5. Step 5: Solve for x
    x = 325,313,467,740.29/758,961.60
  6. Step 6: Final answer
    x = 428,629.68

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Double scale
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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.