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Finding the Fourth Proportional to 542,987.84, 749,391.78 and 356,876.56

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Solution

The fourth proportional to 542,987.84, 749,391.78 and 356,876.56 is: 492,534.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,987.84 : 749,391.78 = 356,876.56 : x
  2. Step 2: Convert to fraction form
    542,987.84/749,391.78 = 356,876.56/x
  3. Step 3: Cross multiply
    542,987.84x = 749,391.78 × 356,876.56
  4. Step 4: Simplify right side
    542,987.84x = 267,440,360,538.68
  5. Step 5: Solve for x
    x = 267,440,360,538.68/542,987.84
  6. Step 6: Final answer
    x = 492,534.71

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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.