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Finding the Fourth Proportional to 700,876.21, 967,209.56 and 378,586.31

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Solution

The fourth proportional to 700,876.21, 967,209.56 and 378,586.31 is: 522,449.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    700,876.21 : 967,209.56 = 378,586.31 : x
  2. Step 2: Convert to fraction form
    700,876.21/967,209.56 = 378,586.31/x
  3. Step 3: Cross multiply
    700,876.21x = 967,209.56 × 378,586.31
  4. Step 4: Simplify right side
    700,876.21x = 366,172,299,513.17
  5. Step 5: Solve for x
    x = 366,172,299,513.17/700,876.21
  6. Step 6: Final answer
    x = 522,449.32

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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.