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Finding the Fourth Proportional to 482,056.88, 664,407.72 and 320,623.28

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Solution

The fourth proportional to 482,056.88, 664,407.72 and 320,623.28 is: 441,907.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,056.88 : 664,407.72 = 320,623.28 : x
  2. Step 2: Convert to fraction form
    482,056.88/664,407.72 = 320,623.28/x
  3. Step 3: Cross multiply
    482,056.88x = 664,407.72 × 320,623.28
  4. Step 4: Simplify right side
    482,056.88x = 213,024,582,443.72
  5. Step 5: Solve for x
    x = 213,024,582,443.72/482,056.88
  6. Step 6: Final answer
    x = 441,907.57

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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.