Home / 1,261,787.64-1,741,891.28-778,618.86

Finding the Fourth Proportional to 1,261,787.64, 1,741,891.28 and 778,618.86

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Solution

The fourth proportional to 1,261,787.64, 1,741,891.28 and 778,618.86 is: 1,074,879.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,261,787.64 : 1,741,891.28 = 778,618.86 : x
  2. Step 2: Convert to fraction form
    1,261,787.64/1,741,891.28 = 778,618.86/x
  3. Step 3: Cross multiply
    1,261,787.64x = 1,741,891.28 × 778,618.86
  4. Step 4: Simplify right side
    1,261,787.64x = 1,356,269,398,784.45
  5. Step 5: Solve for x
    x = 1,356,269,398,784.45/1,261,787.64
  6. Step 6: Final answer
    x = 1,074,879.29

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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.