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Finding the Fourth Proportional to 634,014.75, 875,029.86 and 392,375.16

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Solution

The fourth proportional to 634,014.75, 875,029.86 and 392,375.16 is: 541,533.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,014.75 : 875,029.86 = 392,375.16 : x
  2. Step 2: Convert to fraction form
    634,014.75/875,029.86 = 392,375.16/x
  3. Step 3: Cross multiply
    634,014.75x = 875,029.86 × 392,375.16
  4. Step 4: Simplify right side
    634,014.75x = 343,339,981,322.28
  5. Step 5: Solve for x
    x = 343,339,981,322.28/634,014.75
  6. Step 6: Final answer
    x = 541,533.11

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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.