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Finding the Fourth Proportional to 662,959.80, 995,306.94 and 393,579.72

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Solution

The fourth proportional to 662,959.80, 995,306.94 and 393,579.72 is: 590,884.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,959.80 : 995,306.94 = 393,579.72 : x
  2. Step 2: Convert to fraction form
    662,959.80/995,306.94 = 393,579.72/x
  3. Step 3: Cross multiply
    662,959.80x = 995,306.94 × 393,579.72
  4. Step 4: Simplify right side
    662,959.80x = 391,732,626,759.26
  5. Step 5: Solve for x
    x = 391,732,626,759.26/662,959.80
  6. Step 6: Final answer
    x = 590,884.43

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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.