Home / 880,853.78-1,215,579.42-478,445.78

Finding the Fourth Proportional to 880,853.78, 1,215,579.42 and 478,445.78

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Solution

The fourth proportional to 880,853.78, 1,215,579.42 and 478,445.78 is: 660,255.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    880,853.78 : 1,215,579.42 = 478,445.78 : x
  2. Step 2: Convert to fraction form
    880,853.78/1,215,579.42 = 478,445.78/x
  3. Step 3: Cross multiply
    880,853.78x = 1,215,579.42 × 478,445.78
  4. Step 4: Simplify right side
    880,853.78x = 581,588,843,753.85
  5. Step 5: Solve for x
    x = 581,588,843,753.85/880,853.78
  6. Step 6: Final answer
    x = 660,255.83

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.