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Finding the Fourth Proportional to 707,758.83, 976,718.27 and 385,468.65

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Solution

The fourth proportional to 707,758.83, 976,718.27 and 385,468.65 is: 531,952.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,758.83 : 976,718.27 = 385,468.65 : x
  2. Step 2: Convert to fraction form
    707,758.83/976,718.27 = 385,468.65/x
  3. Step 3: Cross multiply
    707,758.83x = 976,718.27 × 385,468.65
  4. Step 4: Simplify right side
    707,758.83x = 376,494,273,930.91
  5. Step 5: Solve for x
    x = 376,494,273,930.91/707,758.83
  6. Step 6: Final answer
    x = 531,952.78

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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.