Home / 515,986.20-772,229.70-453,000.60

Finding the Fourth Proportional to 515,986.20, 772,229.70 and 453,000.60

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Solution

The fourth proportional to 515,986.20, 772,229.70 and 453,000.60 is: 677,964.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,986.20 : 772,229.70 = 453,000.60 : x
  2. Step 2: Convert to fraction form
    515,986.20/772,229.70 = 453,000.60/x
  3. Step 3: Cross multiply
    515,986.20x = 772,229.70 × 453,000.60
  4. Step 4: Simplify right side
    515,986.20x = 349,820,517,437.82
  5. Step 5: Solve for x
    x = 349,820,517,437.82/515,986.20
  6. Step 6: Final answer
    x = 677,964.87

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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.