Home / 810,660.20-1,214,147.10-512,061.80

Finding the Fourth Proportional to 810,660.20, 1,214,147.10 and 512,061.80

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Solution

The fourth proportional to 810,660.20, 1,214,147.10 and 512,061.80 is: 766,928.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,660.20 : 1,214,147.10 = 512,061.80 : x
  2. Step 2: Convert to fraction form
    810,660.20/1,214,147.10 = 512,061.80/x
  3. Step 3: Cross multiply
    810,660.20x = 1,214,147.10 × 512,061.80
  4. Step 4: Simplify right side
    810,660.20x = 621,718,349,490.78
  5. Step 5: Solve for x
    x = 621,718,349,490.78/810,660.20
  6. Step 6: Final answer
    x = 766,928.42

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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.