Home / 892,721.40-1,338,659.82-345,869.88

Finding the Fourth Proportional to 892,721.40, 1,338,659.82 and 345,869.88

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Solution

The fourth proportional to 892,721.40, 1,338,659.82 and 345,869.88 is: 518,641.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    892,721.40 : 1,338,659.82 = 345,869.88 : x
  2. Step 2: Convert to fraction form
    892,721.40/1,338,659.82 = 345,869.88/x
  3. Step 3: Cross multiply
    892,721.40x = 1,338,659.82 × 345,869.88
  4. Step 4: Simplify right side
    892,721.40x = 463,002,111,304.22
  5. Step 5: Solve for x
    x = 463,002,111,304.22/892,721.40
  6. Step 6: Final answer
    x = 518,641.21

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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.