Home / 678,769.20-1,016,404.20-538,801.20

Finding the Fourth Proportional to 678,769.20, 1,016,404.20 and 538,801.20

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Solution

The fourth proportional to 678,769.20, 1,016,404.20 and 538,801.20 is: 806,812.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,769.20 : 1,016,404.20 = 538,801.20 : x
  2. Step 2: Convert to fraction form
    678,769.20/1,016,404.20 = 538,801.20/x
  3. Step 3: Cross multiply
    678,769.20x = 1,016,404.20 × 538,801.20
  4. Step 4: Simplify right side
    678,769.20x = 547,639,802,645.04
  5. Step 5: Solve for x
    x = 547,639,802,645.04/678,769.20
  6. Step 6: Final answer
    x = 806,812.98

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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.