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Finding the Fourth Proportional to 634,146.98, 875,099.61 and 347,660.78

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Solution

The fourth proportional to 634,146.98, 875,099.61 and 347,660.78 is: 479,759.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,146.98 : 875,099.61 = 347,660.78 : x
  2. Step 2: Convert to fraction form
    634,146.98/875,099.61 = 347,660.78/x
  3. Step 3: Cross multiply
    634,146.98x = 875,099.61 × 347,660.78
  4. Step 4: Simplify right side
    634,146.98x = 304,237,812,990.30
  5. Step 5: Solve for x
    x = 304,237,812,990.30/634,146.98
  6. Step 6: Final answer
    x = 479,759.15

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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.