Home / 810,659.20-1,214,145.60-512,060.80

Finding the Fourth Proportional to 810,659.20, 1,214,145.60 and 512,060.80

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Solution

The fourth proportional to 810,659.20, 1,214,145.60 and 512,060.80 is: 766,926.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,659.20 : 1,214,145.60 = 512,060.80 : x
  2. Step 2: Convert to fraction form
    810,659.20/1,214,145.60 = 512,060.80/x
  3. Step 3: Cross multiply
    810,659.20x = 1,214,145.60 × 512,060.80
  4. Step 4: Simplify right side
    810,659.20x = 621,716,367,252.48
  5. Step 5: Solve for x
    x = 621,716,367,252.48/810,659.20
  6. Step 6: Final answer
    x = 766,926.92

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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.