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Finding the Fourth Proportional to 667,415.25, 921,027.45 and 361,484.52

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Solution

The fourth proportional to 667,415.25, 921,027.45 and 361,484.52 is: 498,845.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,415.25 : 921,027.45 = 361,484.52 : x
  2. Step 2: Convert to fraction form
    667,415.25/921,027.45 = 361,484.52/x
  3. Step 3: Cross multiply
    667,415.25x = 921,027.45 × 361,484.52
  4. Step 4: Simplify right side
    667,415.25x = 332,937,165,670.07
  5. Step 5: Solve for x
    x = 332,937,165,670.07/667,415.25
  6. Step 6: Final answer
    x = 498,845.61

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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.