Home / 769,618.32-1,148,791.48-678,717.40

Finding the Fourth Proportional to 769,618.32, 1,148,791.48 and 678,717.40

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Solution

The fourth proportional to 769,618.32, 1,148,791.48 and 678,717.40 is: 1,013,105.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,618.32 : 1,148,791.48 = 678,717.40 : x
  2. Step 2: Convert to fraction form
    769,618.32/1,148,791.48 = 678,717.40/x
  3. Step 3: Cross multiply
    769,618.32x = 1,148,791.48 × 678,717.40
  4. Step 4: Simplify right side
    769,618.32x = 779,704,766,447.75
  5. Step 5: Solve for x
    x = 779,704,766,447.75/769,618.32
  6. Step 6: Final answer
    x = 1,013,105.78

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.