Home / 781,356.15-1,172,398.86-276,299.64

Finding the Fourth Proportional to 781,356.15, 1,172,398.86 and 276,299.64

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Solution

The fourth proportional to 781,356.15, 1,172,398.86 and 276,299.64 is: 414,578.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,356.15 : 1,172,398.86 = 276,299.64 : x
  2. Step 2: Convert to fraction form
    781,356.15/1,172,398.86 = 276,299.64/x
  3. Step 3: Cross multiply
    781,356.15x = 1,172,398.86 × 276,299.64
  4. Step 4: Simplify right side
    781,356.15x = 323,933,382,954.41
  5. Step 5: Solve for x
    x = 323,933,382,954.41/781,356.15
  6. Step 6: Final answer
    x = 414,578.40

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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.