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Finding the Fourth Proportional to 667,024.46, 920,499.63 and 395,107.82

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Solution

The fourth proportional to 667,024.46, 920,499.63 and 395,107.82 is: 545,252.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,024.46 : 920,499.63 = 395,107.82 : x
  2. Step 2: Convert to fraction form
    667,024.46/920,499.63 = 395,107.82/x
  3. Step 3: Cross multiply
    667,024.46x = 920,499.63 × 395,107.82
  4. Step 4: Simplify right side
    667,024.46x = 363,696,602,120.11
  5. Step 5: Solve for x
    x = 363,696,602,120.11/667,024.46
  6. Step 6: Final answer
    x = 545,252.27

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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.