Home / 819,314.40-1,228,971.60-483,391.20

Finding the Fourth Proportional to 819,314.40, 1,228,971.60 and 483,391.20

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Solution

The fourth proportional to 819,314.40, 1,228,971.60 and 483,391.20 is: 725,086.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,314.40 : 1,228,971.60 = 483,391.20 : x
  2. Step 2: Convert to fraction form
    819,314.40/1,228,971.60 = 483,391.20/x
  3. Step 3: Cross multiply
    819,314.40x = 1,228,971.60 × 483,391.20
  4. Step 4: Simplify right side
    819,314.40x = 594,074,056,489.92
  5. Step 5: Solve for x
    x = 594,074,056,489.92/819,314.40
  6. Step 6: Final answer
    x = 725,086.80

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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.