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Finding the Fourth Proportional to 542,431.58, 748,599.78 and 300,789.92

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Solution

The fourth proportional to 542,431.58, 748,599.78 and 300,789.92 is: 415,114.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,431.58 : 748,599.78 = 300,789.92 : x
  2. Step 2: Convert to fraction form
    542,431.58/748,599.78 = 300,789.92/x
  3. Step 3: Cross multiply
    542,431.58x = 748,599.78 × 300,789.92
  4. Step 4: Simplify right side
    542,431.58x = 225,171,267,938.22
  5. Step 5: Solve for x
    x = 225,171,267,938.22/542,431.58
  6. Step 6: Final answer
    x = 415,114.60

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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.