Home / 812,510.55-1,121,250.69-449,926.59

Finding the Fourth Proportional to 812,510.55, 1,121,250.69 and 449,926.59

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Solution

The fourth proportional to 812,510.55, 1,121,250.69 and 449,926.59 is: 620,891.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    812,510.55 : 1,121,250.69 = 449,926.59 : x
  2. Step 2: Convert to fraction form
    812,510.55/1,121,250.69 = 449,926.59/x
  3. Step 3: Cross multiply
    812,510.55x = 1,121,250.69 × 449,926.59
  4. Step 4: Simplify right side
    812,510.55x = 504,480,499,486.85
  5. Step 5: Solve for x
    x = 504,480,499,486.85/812,510.55
  6. Step 6: Final answer
    x = 620,891.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.