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Finding the Fourth Proportional to 542,287.78, 748,376.34 and 327,385.86

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Solution

The fourth proportional to 542,287.78, 748,376.34 and 327,385.86 is: 451,804.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,287.78 : 748,376.34 = 327,385.86 : x
  2. Step 2: Convert to fraction form
    542,287.78/748,376.34 = 327,385.86/x
  3. Step 3: Cross multiply
    542,287.78x = 748,376.34 × 327,385.86
  4. Step 4: Simplify right side
    542,287.78x = 245,007,831,674.55
  5. Step 5: Solve for x
    x = 245,007,831,674.55/542,287.78
  6. Step 6: Final answer
    x = 451,804.08

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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.