Home / 769,540.40-1,154,310.60-486,105.20

Finding the Fourth Proportional to 769,540.40, 1,154,310.60 and 486,105.20

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Solution

The fourth proportional to 769,540.40, 1,154,310.60 and 486,105.20 is: 729,157.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,540.40 : 1,154,310.60 = 486,105.20 : x
  2. Step 2: Convert to fraction form
    769,540.40/1,154,310.60 = 486,105.20/x
  3. Step 3: Cross multiply
    769,540.40x = 1,154,310.60 × 486,105.20
  4. Step 4: Simplify right side
    769,540.40x = 561,116,385,075.12
  5. Step 5: Solve for x
    x = 561,116,385,075.12/769,540.40
  6. Step 6: Final answer
    x = 729,157.80

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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.