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Finding the Fourth Proportional to 707,464.27, 976,388.91 and 401,639.65

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Solution

The fourth proportional to 707,464.27, 976,388.91 and 401,639.65 is: 554,312.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    707,464.27 : 976,388.91 = 401,639.65 : x
  2. Step 2: Convert to fraction form
    707,464.27/976,388.91 = 401,639.65/x
  3. Step 3: Cross multiply
    707,464.27x = 976,388.91 × 401,639.65
  4. Step 4: Simplify right side
    707,464.27x = 392,156,500,076.28
  5. Step 5: Solve for x
    x = 392,156,500,076.28/707,464.27
  6. Step 6: Final answer
    x = 554,312.80

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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.