Home / 409,171.20-564,460.68-317,902.60

Finding the Fourth Proportional to 409,171.20, 564,460.68 and 317,902.60

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Solution

The fourth proportional to 409,171.20, 564,460.68 and 317,902.60 is: 438,553.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,171.20 : 564,460.68 = 317,902.60 : x
  2. Step 2: Convert to fraction form
    409,171.20/564,460.68 = 317,902.60/x
  3. Step 3: Cross multiply
    409,171.20x = 564,460.68 × 317,902.60
  4. Step 4: Simplify right side
    409,171.20x = 179,443,517,769.77
  5. Step 5: Solve for x
    x = 179,443,517,769.77/409,171.20
  6. Step 6: Final answer
    x = 438,553.64

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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.