Home / 1,109,856.80-1,664,785.20-480,000.80

Finding the Fourth Proportional to 1,109,856.80, 1,664,785.20 and 480,000.80

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Solution

The fourth proportional to 1,109,856.80, 1,664,785.20 and 480,000.80 is: 720,001.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,856.80 : 1,664,785.20 = 480,000.80 : x
  2. Step 2: Convert to fraction form
    1,109,856.80/1,664,785.20 = 480,000.80/x
  3. Step 3: Cross multiply
    1,109,856.80x = 1,664,785.20 × 480,000.80
  4. Step 4: Simplify right side
    1,109,856.80x = 799,098,227,828.16
  5. Step 5: Solve for x
    x = 799,098,227,828.16/1,109,856.80
  6. Step 6: Final answer
    x = 720,001.20

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Double scale
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Similar ratio
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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.