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Finding the Fourth Proportional to 412,252.32, 621,186.54 and 339,012.96

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Solution

The fourth proportional to 412,252.32, 621,186.54 and 339,012.96 is: 510,828.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,252.32 : 621,186.54 = 339,012.96 : x
  2. Step 2: Convert to fraction form
    412,252.32/621,186.54 = 339,012.96/x
  3. Step 3: Cross multiply
    412,252.32x = 621,186.54 × 339,012.96
  4. Step 4: Simplify right side
    412,252.32x = 210,590,287,637.56
  5. Step 5: Solve for x
    x = 210,590,287,637.56/412,252.32
  6. Step 6: Final answer
    x = 510,828.63

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.