Home / 1,286,786.56-1,929,868.80-539,392

Finding the Fourth Proportional to 1,286,786.56, 1,929,868.80 and 539,392

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Solution

The fourth proportional to 1,286,786.56, 1,929,868.80 and 539,392 is: 808,957.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,786.56 : 1,929,868.80 = 539,392 : x
  2. Step 2: Convert to fraction form
    1,286,786.56/1,929,868.80 = 539,392/x
  3. Step 3: Cross multiply
    1,286,786.56x = 1,929,868.80 × 539,392
  4. Step 4: Simplify right side
    1,286,786.56x = 1,040,955,791,769.60
  5. Step 5: Solve for x
    x = 1,040,955,791,769.60/1,286,786.56
  6. Step 6: Final answer
    x = 808,957.62

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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.