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Finding the Fourth Proportional to 542,672.40, 748,834.56 and 300,950.76

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Solution

The fourth proportional to 542,672.40, 748,834.56 and 300,950.76 is: 415,282.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,672.40 : 748,834.56 = 300,950.76 : x
  2. Step 2: Convert to fraction form
    542,672.40/748,834.56 = 300,950.76/x
  3. Step 3: Cross multiply
    542,672.40x = 748,834.56 × 300,950.76
  4. Step 4: Simplify right side
    542,672.40x = 225,362,329,946.27
  5. Step 5: Solve for x
    x = 225,362,329,946.27/542,672.40
  6. Step 6: Final answer
    x = 415,282.46

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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.