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Finding the Fourth Proportional to 662,974.80, 995,329.44 and 393,594.72

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Solution

The fourth proportional to 662,974.80, 995,329.44 and 393,594.72 is: 590,906.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,974.80 : 995,329.44 = 393,594.72 : x
  2. Step 2: Convert to fraction form
    662,974.80/995,329.44 = 393,594.72/x
  3. Step 3: Cross multiply
    662,974.80x = 995,329.44 × 393,594.72
  4. Step 4: Simplify right side
    662,974.80x = 391,756,412,244.56
  5. Step 5: Solve for x
    x = 391,756,412,244.56/662,974.80
  6. Step 6: Final answer
    x = 590,906.94

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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.