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Finding the Fourth Proportional to 542,290.38, 748,405.56 and 300,648.78

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Solution

The fourth proportional to 542,290.38, 748,405.56 and 300,648.78 is: 414,920.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,290.38 : 748,405.56 = 300,648.78 : x
  2. Step 2: Convert to fraction form
    542,290.38/748,405.56 = 300,648.78/x
  3. Step 3: Cross multiply
    542,290.38x = 748,405.56 × 300,648.78
  4. Step 4: Simplify right side
    542,290.38x = 225,007,218,559.22
  5. Step 5: Solve for x
    x = 225,007,218,559.22/542,290.38
  6. Step 6: Final answer
    x = 414,920.17

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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.