Home / 678,105.60-1,018,324.80-479,817.60

Finding the Fourth Proportional to 678,105.60, 1,018,324.80 and 479,817.60

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Solution

The fourth proportional to 678,105.60, 1,018,324.80 and 479,817.60 is: 720,551.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,105.60 : 1,018,324.80 = 479,817.60 : x
  2. Step 2: Convert to fraction form
    678,105.60/1,018,324.80 = 479,817.60/x
  3. Step 3: Cross multiply
    678,105.60x = 1,018,324.80 × 479,817.60
  4. Step 4: Simplify right side
    678,105.60x = 488,610,161,556.48
  5. Step 5: Solve for x
    x = 488,610,161,556.48/678,105.60
  6. Step 6: Final answer
    x = 720,551.73

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Double scale
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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.