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Finding the Fourth Proportional to 482,721.30, 666,850.28 and 385,801.07

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Solution

The fourth proportional to 482,721.30, 666,850.28 and 385,801.07 is: 532,960.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,721.30 : 666,850.28 = 385,801.07 : x
  2. Step 2: Convert to fraction form
    482,721.30/666,850.28 = 385,801.07/x
  3. Step 3: Cross multiply
    482,721.30x = 666,850.28 × 385,801.07
  4. Step 4: Simplify right side
    482,721.30x = 257,271,546,290.54
  5. Step 5: Solve for x
    x = 257,271,546,290.54/482,721.30
  6. Step 6: Final answer
    x = 532,960.83

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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.