Home / 769,664.40-1,154,496.60-486,229.20

Finding the Fourth Proportional to 769,664.40, 1,154,496.60 and 486,229.20

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Solution

The fourth proportional to 769,664.40, 1,154,496.60 and 486,229.20 is: 729,343.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,664.40 : 1,154,496.60 = 486,229.20 : x
  2. Step 2: Convert to fraction form
    769,664.40/1,154,496.60 = 486,229.20/x
  3. Step 3: Cross multiply
    769,664.40x = 1,154,496.60 × 486,229.20
  4. Step 4: Simplify right side
    769,664.40x = 561,349,958,220.72
  5. Step 5: Solve for x
    x = 561,349,958,220.72/769,664.40
  6. Step 6: Final answer
    x = 729,343.80

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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.