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Finding the Fourth Proportional to 480,472.22, 663,051.42 and 289,522.49

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Solution

The fourth proportional to 480,472.22, 663,051.42 and 289,522.49 is: 399,540.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    480,472.22 : 663,051.42 = 289,522.49 : x
  2. Step 2: Convert to fraction form
    480,472.22/663,051.42 = 289,522.49/x
  3. Step 3: Cross multiply
    480,472.22x = 663,051.42 × 289,522.49
  4. Step 4: Simplify right side
    480,472.22x = 191,968,294,801.18
  5. Step 5: Solve for x
    x = 191,968,294,801.18/480,472.22
  6. Step 6: Final answer
    x = 399,540.88

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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.