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Finding the Fourth Proportional to 634,340.20, 951,672.30 and 447,716.20

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Solution

The fourth proportional to 634,340.20, 951,672.30 and 447,716.20 is: 671,688.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    634,340.20 : 951,672.30 = 447,716.20 : x
  2. Step 2: Convert to fraction form
    634,340.20/951,672.30 = 447,716.20/x
  3. Step 3: Cross multiply
    634,340.20x = 951,672.30 × 447,716.20
  4. Step 4: Simplify right side
    634,340.20x = 426,079,105,801.26
  5. Step 5: Solve for x
    x = 426,079,105,801.26/634,340.20
  6. Step 6: Final answer
    x = 671,688.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.