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Finding the Fourth Proportional to 634,013.56, 875,028.42 and 392,374.04

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Solution

The fourth proportional to 634,013.56, 875,028.42 and 392,374.04 is: 541,531.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,013.56 : 875,028.42 = 392,374.04 : x
  2. Step 2: Convert to fraction form
    634,013.56/875,028.42 = 392,374.04/x
  3. Step 3: Cross multiply
    634,013.56x = 875,028.42 × 392,374.04
  4. Step 4: Simplify right side
    634,013.56x = 343,338,436,270.22
  5. Step 5: Solve for x
    x = 343,338,436,270.22/634,013.56
  6. Step 6: Final answer
    x = 541,531.69

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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.