Home / 639,169.38-882,056.25-352,697.76

Finding the Fourth Proportional to 639,169.38, 882,056.25 and 352,697.76

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Solution

The fourth proportional to 639,169.38, 882,056.25 and 352,697.76 is: 486,724.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,169.38 : 882,056.25 = 352,697.76 : x
  2. Step 2: Convert to fraction form
    639,169.38/882,056.25 = 352,697.76/x
  3. Step 3: Cross multiply
    639,169.38x = 882,056.25 × 352,697.76
  4. Step 4: Simplify right side
    639,169.38x = 311,099,263,569
  5. Step 5: Solve for x
    x = 311,099,263,569/639,169.38
  6. Step 6: Final answer
    x = 486,724.29

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1.5x scale

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.