Home / 1,586,721.40-2,379,839.10-521,765.80

Finding the Fourth Proportional to 1,586,721.40, 2,379,839.10 and 521,765.80

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Solution

The fourth proportional to 1,586,721.40, 2,379,839.10 and 521,765.80 is: 782,568.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,586,721.40 : 2,379,839.10 = 521,765.80 : x
  2. Step 2: Convert to fraction form
    1,586,721.40/2,379,839.10 = 521,765.80/x
  3. Step 3: Cross multiply
    1,586,721.40x = 2,379,839.10 × 521,765.80
  4. Step 4: Simplify right side
    1,586,721.40x = 1,241,718,651,882.78
  5. Step 5: Solve for x
    x = 1,241,718,651,882.78/1,586,721.40
  6. Step 6: Final answer
    x = 782,568.79

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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.