Home / 840,397.26-1,260,606.86-279,431.76

Finding the Fourth Proportional to 840,397.26, 1,260,606.86 and 279,431.76

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Solution

The fourth proportional to 840,397.26, 1,260,606.86 and 279,431.76 is: 419,151.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,397.26 : 1,260,606.86 = 279,431.76 : x
  2. Step 2: Convert to fraction form
    840,397.26/1,260,606.86 = 279,431.76/x
  3. Step 3: Cross multiply
    840,397.26x = 1,260,606.86 × 279,431.76
  4. Step 4: Simplify right side
    840,397.26x = 352,253,593,557.87
  5. Step 5: Solve for x
    x = 352,253,593,557.87/840,397.26
  6. Step 6: Final answer
    x = 419,151.29

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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.