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Finding the Fourth Proportional to 707,626.59, 976,498.90 and 385,329.61

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Solution

The fourth proportional to 707,626.59, 976,498.90 and 385,329.61 is: 531,740.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,626.59 : 976,498.90 = 385,329.61 : x
  2. Step 2: Convert to fraction form
    707,626.59/976,498.90 = 385,329.61/x
  3. Step 3: Cross multiply
    707,626.59x = 976,498.90 × 385,329.61
  4. Step 4: Simplify right side
    707,626.59x = 376,273,940,302.43
  5. Step 5: Solve for x
    x = 376,273,940,302.43/707,626.59
  6. Step 6: Final answer
    x = 531,740.82

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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.