Home / 1,222,841.76-1,687,439.36-678,949.44

Finding the Fourth Proportional to 1,222,841.76, 1,687,439.36 and 678,949.44

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Solution

The fourth proportional to 1,222,841.76, 1,687,439.36 and 678,949.44 is: 936,904.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,222,841.76 : 1,687,439.36 = 678,949.44 : x
  2. Step 2: Convert to fraction form
    1,222,841.76/1,687,439.36 = 678,949.44/x
  3. Step 3: Cross multiply
    1,222,841.76x = 1,687,439.36 × 678,949.44
  4. Step 4: Simplify right side
    1,222,841.76x = 1,145,686,008,505.96
  5. Step 5: Solve for x
    x = 1,145,686,008,505.96/1,222,841.76
  6. Step 6: Final answer
    x = 936,904.55

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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.