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Finding the Fourth Proportional to 707,463.88, 976,300.30 and 385,174

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Solution

The fourth proportional to 707,463.88, 976,300.30 and 385,174 is: 531,540.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,463.88 : 976,300.30 = 385,174 : x
  2. Step 2: Convert to fraction form
    707,463.88/976,300.30 = 385,174/x
  3. Step 3: Cross multiply
    707,463.88x = 976,300.30 × 385,174
  4. Step 4: Simplify right side
    707,463.88x = 376,045,491,752.20
  5. Step 5: Solve for x
    x = 376,045,491,752.20/707,463.88
  6. Step 6: Final answer
    x = 531,540.20

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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.