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Finding the Fourth Proportional to 542,761.67, 748,520.92 and 338,831.51

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Solution

The fourth proportional to 542,761.67, 748,520.92 and 338,831.51 is: 467,281.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,761.67 : 748,520.92 = 338,831.51 : x
  2. Step 2: Convert to fraction form
    542,761.67/748,520.92 = 338,831.51/x
  3. Step 3: Cross multiply
    542,761.67x = 748,520.92 × 338,831.51
  4. Step 4: Simplify right side
    542,761.67x = 253,622,473,590.19
  5. Step 5: Solve for x
    x = 253,622,473,590.19/542,761.67
  6. Step 6: Final answer
    x = 467,281.47

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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.