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Finding the Fourth Proportional to 579,863.22, 800,220.15 and 350,388.42

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Solution

The fourth proportional to 579,863.22, 800,220.15 and 350,388.42 is: 483,541.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,863.22 : 800,220.15 = 350,388.42 : x
  2. Step 2: Convert to fraction form
    579,863.22/800,220.15 = 350,388.42/x
  3. Step 3: Cross multiply
    579,863.22x = 800,220.15 × 350,388.42
  4. Step 4: Simplify right side
    579,863.22x = 280,387,874,010.66
  5. Step 5: Solve for x
    x = 280,387,874,010.66/579,863.22
  6. Step 6: Final answer
    x = 483,541.40

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Double scale
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Similar ratio
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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.