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Finding the Fourth Proportional to 707,327.29, 976,111.78 and 385,039.80

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Solution

The fourth proportional to 707,327.29, 976,111.78 and 385,039.80 is: 531,354.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,327.29 : 976,111.78 = 385,039.80 : x
  2. Step 2: Convert to fraction form
    707,327.29/976,111.78 = 385,039.80/x
  3. Step 3: Cross multiply
    707,327.29x = 976,111.78 × 385,039.80
  4. Step 4: Simplify right side
    707,327.29x = 375,841,885,429.12
  5. Step 5: Solve for x
    x = 375,841,885,429.12/707,327.29
  6. Step 6: Final answer
    x = 531,354.99

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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.