Home / 840,400.88-1,260,612.25-279,435.38

Finding the Fourth Proportional to 840,400.88, 1,260,612.25 and 279,435.38

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Solution

The fourth proportional to 840,400.88, 1,260,612.25 and 279,435.38 is: 419,156.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    840,400.88 : 1,260,612.25 = 279,435.38 : x
  2. Step 2: Convert to fraction form
    840,400.88/1,260,612.25 = 279,435.38/x
  3. Step 3: Cross multiply
    840,400.88x = 1,260,612.25 × 279,435.38
  4. Step 4: Simplify right side
    840,400.88x = 352,259,656,109.76
  5. Step 5: Solve for x
    x = 352,259,656,109.76/840,400.88
  6. Step 6: Final answer
    x = 419,156.70

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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.