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Finding the Fourth Proportional to 707,479.26, 976,326.39 and 385,189.98

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Solution

The fourth proportional to 707,479.26, 976,326.39 and 385,189.98 is: 531,564.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,479.26 : 976,326.39 = 385,189.98 : x
  2. Step 2: Convert to fraction form
    707,479.26/976,326.39 = 385,189.98/x
  3. Step 3: Cross multiply
    707,479.26x = 976,326.39 × 385,189.98
  4. Step 4: Simplify right side
    707,479.26x = 376,071,142,637.57
  5. Step 5: Solve for x
    x = 376,071,142,637.57/707,479.26
  6. Step 6: Final answer
    x = 531,564.90

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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.