Home / 769,986.78-1,154,204.67-320,956.20

Finding the Fourth Proportional to 769,986.78, 1,154,204.67 and 320,956.20

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Solution

The fourth proportional to 769,986.78, 1,154,204.67 and 320,956.20 is: 481,111.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    769,986.78 : 1,154,204.67 = 320,956.20 : x
  2. Step 2: Convert to fraction form
    769,986.78/1,154,204.67 = 320,956.20/x
  3. Step 3: Cross multiply
    769,986.78x = 1,154,204.67 × 320,956.20
  4. Step 4: Simplify right side
    769,986.78x = 370,449,144,905.45
  5. Step 5: Solve for x
    x = 370,449,144,905.45/769,986.78
  6. Step 6: Final answer
    x = 481,111.05

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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.