Home / 791,279.10-1,091,963.70-428,712.21

Finding the Fourth Proportional to 791,279.10, 1,091,963.70 and 428,712.21

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Solution

The fourth proportional to 791,279.10, 1,091,963.70 and 428,712.21 is: 591,622.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    791,279.10 : 1,091,963.70 = 428,712.21 : x
  2. Step 2: Convert to fraction form
    791,279.10/1,091,963.70 = 428,712.21/x
  3. Step 3: Cross multiply
    791,279.10x = 1,091,963.70 × 428,712.21
  4. Step 4: Simplify right side
    791,279.10x = 468,138,171,066.78
  5. Step 5: Solve for x
    x = 468,138,171,066.78/791,279.10
  6. Step 6: Final answer
    x = 591,622.06

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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.