Home / 920,254.88-1,380,589.68-280,615.16

Finding the Fourth Proportional to 920,254.88, 1,380,589.68 and 280,615.16

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Solution

The fourth proportional to 920,254.88, 1,380,589.68 and 280,615.16 is: 420,985.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,254.88 : 1,380,589.68 = 280,615.16 : x
  2. Step 2: Convert to fraction form
    920,254.88/1,380,589.68 = 280,615.16/x
  3. Step 3: Cross multiply
    920,254.88x = 1,380,589.68 × 280,615.16
  4. Step 4: Simplify right side
    920,254.88x = 387,414,393,947.55
  5. Step 5: Solve for x
    x = 387,414,393,947.55/920,254.88
  6. Step 6: Final answer
    x = 420,985.97

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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.