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Finding the Fourth Proportional to 625,556.79, 937,609.29 and 287,888.58

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Solution

The fourth proportional to 625,556.79, 937,609.29 and 287,888.58 is: 431,498.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,556.79 : 937,609.29 = 287,888.58 : x
  2. Step 2: Convert to fraction form
    625,556.79/937,609.29 = 287,888.58/x
  3. Step 3: Cross multiply
    625,556.79x = 937,609.29 × 287,888.58
  4. Step 4: Simplify right side
    625,556.79x = 269,927,007,092.91
  5. Step 5: Solve for x
    x = 269,927,007,092.91/625,556.79
  6. Step 6: Final answer
    x = 431,498.80

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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.