Home / 766,701.39-1,148,578.11-428,716.94

Finding the Fourth Proportional to 766,701.39, 1,148,578.11 and 428,716.94

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Solution

The fourth proportional to 766,701.39, 1,148,578.11 and 428,716.94 is: 642,251.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    766,701.39 : 1,148,578.11 = 428,716.94 : x
  2. Step 2: Convert to fraction form
    766,701.39/1,148,578.11 = 428,716.94/x
  3. Step 3: Cross multiply
    766,701.39x = 1,148,578.11 × 428,716.94
  4. Step 4: Simplify right side
    766,701.39x = 492,414,886,927.29
  5. Step 5: Solve for x
    x = 492,414,886,927.29/766,701.39
  6. Step 6: Final answer
    x = 642,251.20

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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.