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Finding the Fourth Proportional to 497,179.80, 686,085.97 and 290,467.37

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Solution

The fourth proportional to 497,179.80, 686,085.97 and 290,467.37 is: 400,832.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,179.80 : 686,085.97 = 290,467.37 : x
  2. Step 2: Convert to fraction form
    497,179.80/686,085.97 = 290,467.37/x
  3. Step 3: Cross multiply
    497,179.80x = 686,085.97 × 290,467.37
  4. Step 4: Simplify right side
    497,179.80x = 199,285,585,791.18
  5. Step 5: Solve for x
    x = 199,285,585,791.18/497,179.80
  6. Step 6: Final answer
    x = 400,832.03

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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.