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Finding the Fourth Proportional to 881,865.72, 1,322,973.54 and 320,943.96

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Solution

The fourth proportional to 881,865.72, 1,322,973.54 and 320,943.96 is: 481,479.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,865.72 : 1,322,973.54 = 320,943.96 : x
  2. Step 2: Convert to fraction form
    881,865.72/1,322,973.54 = 320,943.96/x
  3. Step 3: Cross multiply
    881,865.72x = 1,322,973.54 × 320,943.96
  4. Step 4: Simplify right side
    881,865.72x = 424,600,366,902.82
  5. Step 5: Solve for x
    x = 424,600,366,902.82/881,865.72
  6. Step 6: Final answer
    x = 481,479.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.