Home / 770,229.79-1,155,449.78-320,845.57

Finding the Fourth Proportional to 770,229.79, 1,155,449.78 and 320,845.57

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Solution

The fourth proportional to 770,229.79, 1,155,449.78 and 320,845.57 is: 481,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,229.79 : 1,155,449.78 = 320,845.57 : x
  2. Step 2: Convert to fraction form
    770,229.79/1,155,449.78 = 320,845.57/x
  3. Step 3: Cross multiply
    770,229.79x = 1,155,449.78 × 320,845.57
  4. Step 4: Simplify right side
    770,229.79x = 370,720,946,480.20
  5. Step 5: Solve for x
    x = 370,720,946,480.20/770,229.79
  6. Step 6: Final answer
    x = 481,312.14

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Double scale
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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.