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Finding the Fourth Proportional to 707,660.40, 976,577.64 and 385,371.96

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Solution

The fourth proportional to 707,660.40, 976,577.64 and 385,371.96 is: 531,816.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,660.40 : 976,577.64 = 385,371.96 : x
  2. Step 2: Convert to fraction form
    707,660.40/976,577.64 = 385,371.96/x
  3. Step 3: Cross multiply
    707,660.40x = 976,577.64 × 385,371.96
  4. Step 4: Simplify right side
    707,660.40x = 376,345,639,218.97
  5. Step 5: Solve for x
    x = 376,345,639,218.97/707,660.40
  6. Step 6: Final answer
    x = 531,816.73

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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.