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Finding the Fourth Proportional to 634,147.12, 875,122.81 and 347,661.06

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Solution

The fourth proportional to 634,147.12, 875,122.81 and 347,661.06 is: 479,772.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,147.12 : 875,122.81 = 347,661.06 : x
  2. Step 2: Convert to fraction form
    634,147.12/875,122.81 = 347,661.06/x
  3. Step 3: Cross multiply
    634,147.12x = 875,122.81 × 347,661.06
  4. Step 4: Simplify right side
    634,147.12x = 304,246,123,754.78
  5. Step 5: Solve for x
    x = 304,246,123,754.78/634,147.12
  6. Step 6: Final answer
    x = 479,772.14

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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.