Home / 823,719.20-1,234,266.60-611,142.80

Finding the Fourth Proportional to 823,719.20, 1,234,266.60 and 611,142.80

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Solution

The fourth proportional to 823,719.20, 1,234,266.60 and 611,142.80 is: 915,740.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    823,719.20 : 1,234,266.60 = 611,142.80 : x
  2. Step 2: Convert to fraction form
    823,719.20/1,234,266.60 = 611,142.80/x
  3. Step 3: Cross multiply
    823,719.20x = 1,234,266.60 × 611,142.80
  4. Step 4: Simplify right side
    823,719.20x = 754,313,145,870.48
  5. Step 5: Solve for x
    x = 754,313,145,870.48/823,719.20
  6. Step 6: Final answer
    x = 915,740.64

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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.