Home / 770,519.20-1,154,223.60-534,128.80

Finding the Fourth Proportional to 770,519.20, 1,154,223.60 and 534,128.80

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Solution

The fourth proportional to 770,519.20, 1,154,223.60 and 534,128.80 is: 800,115.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,519.20 : 1,154,223.60 = 534,128.80 : x
  2. Step 2: Convert to fraction form
    770,519.20/1,154,223.60 = 534,128.80/x
  3. Step 3: Cross multiply
    770,519.20x = 1,154,223.60 × 534,128.80
  4. Step 4: Simplify right side
    770,519.20x = 616,504,066,399.68
  5. Step 5: Solve for x
    x = 616,504,066,399.68/770,519.20
  6. Step 6: Final answer
    x = 800,115.13

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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.