Home / 791,288.10-1,091,976.12-428,721.22

Finding the Fourth Proportional to 791,288.10, 1,091,976.12 and 428,721.22

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Solution

The fourth proportional to 791,288.10, 1,091,976.12 and 428,721.22 is: 591,634.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,288.10 : 1,091,976.12 = 428,721.22 : x
  2. Step 2: Convert to fraction form
    791,288.10/1,091,976.12 = 428,721.22/x
  3. Step 3: Cross multiply
    791,288.10x = 1,091,976.12 × 428,721.22
  4. Step 4: Simplify right side
    791,288.10x = 468,153,334,377.27
  5. Step 5: Solve for x
    x = 468,153,334,377.27/791,288.10
  6. Step 6: Final answer
    x = 591,634.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.