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Finding the Fourth Proportional to 542,290.52, 748,405.70 and 300,648.89

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Solution

The fourth proportional to 542,290.52, 748,405.70 and 300,648.89 is: 414,920.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,290.52 : 748,405.70 = 300,648.89 : x
  2. Step 2: Convert to fraction form
    542,290.52/748,405.70 = 300,648.89/x
  3. Step 3: Cross multiply
    542,290.52x = 748,405.70 × 300,648.89
  4. Step 4: Simplify right side
    542,290.52x = 225,007,342,974.67
  5. Step 5: Solve for x
    x = 225,007,342,974.67/542,290.52
  6. Step 6: Final answer
    x = 414,920.30

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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.