Home / 579,179.80-868,769.70-313,459.30

Finding the Fourth Proportional to 579,179.80, 868,769.70 and 313,459.30

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Solution

The fourth proportional to 579,179.80, 868,769.70 and 313,459.30 is: 470,188.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,179.80 : 868,769.70 = 313,459.30 : x
  2. Step 2: Convert to fraction form
    579,179.80/868,769.70 = 313,459.30/x
  3. Step 3: Cross multiply
    579,179.80x = 868,769.70 × 313,459.30
  4. Step 4: Simplify right side
    579,179.80x = 272,323,942,023.21
  5. Step 5: Solve for x
    x = 272,323,942,023.21/579,179.80
  6. Step 6: Final answer
    x = 470,188.95

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Double scale
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Similar ratio
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1.5x scale

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.