Home / 547,916.40-821,356.20-323,449.20

Finding the Fourth Proportional to 547,916.40, 821,356.20 and 323,449.20

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Solution

The fourth proportional to 547,916.40, 821,356.20 and 323,449.20 is: 484,867.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,916.40 : 821,356.20 = 323,449.20 : x
  2. Step 2: Convert to fraction form
    547,916.40/821,356.20 = 323,449.20/x
  3. Step 3: Cross multiply
    547,916.40x = 821,356.20 × 323,449.20
  4. Step 4: Simplify right side
    547,916.40x = 265,667,005,805.04
  5. Step 5: Solve for x
    x = 265,667,005,805.04/547,916.40
  6. Step 6: Final answer
    x = 484,867.78

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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.