Home / 819,233.40-1,228,850.10-258,324.60

Finding the Fourth Proportional to 819,233.40, 1,228,850.10 and 258,324.60

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Solution

The fourth proportional to 819,233.40, 1,228,850.10 and 258,324.60 is: 387,486.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,233.40 : 1,228,850.10 = 258,324.60 : x
  2. Step 2: Convert to fraction form
    819,233.40/1,228,850.10 = 258,324.60/x
  3. Step 3: Cross multiply
    819,233.40x = 1,228,850.10 × 258,324.60
  4. Step 4: Simplify right side
    819,233.40x = 317,442,210,542.46
  5. Step 5: Solve for x
    x = 317,442,210,542.46/819,233.40
  6. Step 6: Final answer
    x = 387,486.90

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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.