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Finding the Fourth Proportional to 707,648.10, 976,555.44 and 385,359.54

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Solution

The fourth proportional to 707,648.10, 976,555.44 and 385,359.54 is: 531,796.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,648.10 : 976,555.44 = 385,359.54 : x
  2. Step 2: Convert to fraction form
    707,648.10/976,555.44 = 385,359.54/x
  3. Step 3: Cross multiply
    707,648.10x = 976,555.44 × 385,359.54
  4. Step 4: Simplify right side
    707,648.10x = 376,324,955,142.90
  5. Step 5: Solve for x
    x = 376,324,955,142.90/707,648.10
  6. Step 6: Final answer
    x = 531,796.74

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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.