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Finding the Fourth Proportional to 707,722.72, 976,684.99 and 401,827.56

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Solution

The fourth proportional to 707,722.72, 976,684.99 and 401,827.56 is: 554,537.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,722.72 : 976,684.99 = 401,827.56 : x
  2. Step 2: Convert to fraction form
    707,722.72/976,684.99 = 401,827.56/x
  3. Step 3: Cross multiply
    707,722.72x = 976,684.99 × 401,827.56
  4. Step 4: Simplify right side
    707,722.72x = 392,458,946,420.32
  5. Step 5: Solve for x
    x = 392,458,946,420.32/707,722.72
  6. Step 6: Final answer
    x = 554,537.72

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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.