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Finding the Fourth Proportional to 707,391.18, 976,212.30 and 385,110.54

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Solution

The fourth proportional to 707,391.18, 976,212.30 and 385,110.54 is: 531,459.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,391.18 : 976,212.30 = 385,110.54 : x
  2. Step 2: Convert to fraction form
    707,391.18/976,212.30 = 385,110.54/x
  3. Step 3: Cross multiply
    707,391.18x = 976,212.30 × 385,110.54
  4. Step 4: Simplify right side
    707,391.18x = 375,949,646,007.64
  5. Step 5: Solve for x
    x = 375,949,646,007.64/707,391.18
  6. Step 6: Final answer
    x = 531,459.33

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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.