Home / 819,288.20-1,226,858.70-653,400.20

Finding the Fourth Proportional to 819,288.20, 1,226,858.70 and 653,400.20

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Solution

The fourth proportional to 819,288.20, 1,226,858.70 and 653,400.20 is: 978,446.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,288.20 : 1,226,858.70 = 653,400.20 : x
  2. Step 2: Convert to fraction form
    819,288.20/1,226,858.70 = 653,400.20/x
  3. Step 3: Cross multiply
    819,288.20x = 1,226,858.70 × 653,400.20
  4. Step 4: Simplify right side
    819,288.20x = 801,629,719,951.74
  5. Step 5: Solve for x
    x = 801,629,719,951.74/819,288.20
  6. Step 6: Final answer
    x = 978,446.56

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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.