Home / 819,711.20-1,228,254.60-538,900.40

Finding the Fourth Proportional to 819,711.20, 1,228,254.60 and 538,900.40

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Solution

The fourth proportional to 819,711.20, 1,228,254.60 and 538,900.40 is: 807,487.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    819,711.20 : 1,228,254.60 = 538,900.40 : x
  2. Step 2: Convert to fraction form
    819,711.20/1,228,254.60 = 538,900.40/x
  3. Step 3: Cross multiply
    819,711.20x = 1,228,254.60 × 538,900.40
  4. Step 4: Simplify right side
    819,711.20x = 661,906,895,241.84
  5. Step 5: Solve for x
    x = 661,906,895,241.84/819,711.20
  6. Step 6: Final answer
    x = 807,487.92

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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.