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Finding the Fourth Proportional to 497,876.60, 687,131.43 and 304,244.48

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Solution

The fourth proportional to 497,876.60, 687,131.43 and 304,244.48 is: 419,895.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    497,876.60 : 687,131.43 = 304,244.48 : x
  2. Step 2: Convert to fraction form
    497,876.60/687,131.43 = 304,244.48/x
  3. Step 3: Cross multiply
    497,876.60x = 687,131.43 × 304,244.48
  4. Step 4: Simplify right side
    497,876.60x = 209,055,944,612.01
  5. Step 5: Solve for x
    x = 209,055,944,612.01/497,876.60
  6. Step 6: Final answer
    x = 419,895.10

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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.