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Finding the Fourth Proportional to 634,084.32, 875,126.48 and 392,444.72

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Solution

The fourth proportional to 634,084.32, 875,126.48 and 392,444.72 is: 541,629.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,084.32 : 875,126.48 = 392,444.72 : x
  2. Step 2: Convert to fraction form
    634,084.32/875,126.48 = 392,444.72/x
  3. Step 3: Cross multiply
    634,084.32x = 875,126.48 × 392,444.72
  4. Step 4: Simplify right side
    634,084.32x = 343,438,766,408.19
  5. Step 5: Solve for x
    x = 343,438,766,408.19/634,084.32
  6. Step 6: Final answer
    x = 541,629.49

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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.