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Finding the Fourth Proportional to 542,481.10, 748,612.35 and 313,020.38

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Solution

The fourth proportional to 542,481.10, 748,612.35 and 313,020.38 is: 431,961.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,481.10 : 748,612.35 = 313,020.38 : x
  2. Step 2: Convert to fraction form
    542,481.10/748,612.35 = 313,020.38/x
  3. Step 3: Cross multiply
    542,481.10x = 748,612.35 × 313,020.38
  4. Step 4: Simplify right side
    542,481.10x = 234,330,924,141.22
  5. Step 5: Solve for x
    x = 234,330,924,141.22/542,481.10
  6. Step 6: Final answer
    x = 431,961.45

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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.