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Finding the Fourth Proportional to 622,792.31, 859,516.83 and 381,234.51

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Solution

The fourth proportional to 622,792.31, 859,516.83 and 381,234.51 is: 526,142.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,792.31 : 859,516.83 = 381,234.51 : x
  2. Step 2: Convert to fraction form
    622,792.31/859,516.83 = 381,234.51/x
  3. Step 3: Cross multiply
    622,792.31x = 859,516.83 × 381,234.51
  4. Step 4: Simplify right side
    622,792.31x = 327,677,477,521.80
  5. Step 5: Solve for x
    x = 327,677,477,521.80/622,792.31
  6. Step 6: Final answer
    x = 526,142.46

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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.