Home / 558,660.38-838,155.80-322,172.78

Finding the Fourth Proportional to 558,660.38, 838,155.80 and 322,172.78

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Solution

The fourth proportional to 558,660.38, 838,155.80 and 322,172.78 is: 483,354.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,660.38 : 838,155.80 = 322,172.78 : x
  2. Step 2: Convert to fraction form
    558,660.38/838,155.80 = 322,172.78/x
  3. Step 3: Cross multiply
    558,660.38x = 838,155.80 × 322,172.78
  4. Step 4: Simplify right side
    558,660.38x = 270,030,980,773.78
  5. Step 5: Solve for x
    x = 270,030,980,773.78/558,660.38
  6. Step 6: Final answer
    x = 483,354.45

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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.