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Finding the Fourth Proportional to 542,672.89, 748,869.73 and 300,977.95

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Solution

The fourth proportional to 542,672.89, 748,869.73 and 300,977.95 is: 415,339.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,672.89 : 748,869.73 = 300,977.95 : x
  2. Step 2: Convert to fraction form
    542,672.89/748,869.73 = 300,977.95/x
  3. Step 3: Cross multiply
    542,672.89x = 748,869.73 × 300,977.95
  4. Step 4: Simplify right side
    542,672.89x = 225,393,277,884.66
  5. Step 5: Solve for x
    x = 225,393,277,884.66/542,672.89
  6. Step 6: Final answer
    x = 415,339.11

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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.