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Finding the Fourth Proportional to 667,710.42, 999,334.83 and 396,959.82

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Solution

The fourth proportional to 667,710.42, 999,334.83 and 396,959.82 is: 594,113.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,710.42 : 999,334.83 = 396,959.82 : x
  2. Step 2: Convert to fraction form
    667,710.42/999,334.83 = 396,959.82/x
  3. Step 3: Cross multiply
    667,710.42x = 999,334.83 × 396,959.82
  4. Step 4: Simplify right side
    667,710.42x = 396,695,774,236.53
  5. Step 5: Solve for x
    x = 396,695,774,236.53/667,710.42
  6. Step 6: Final answer
    x = 594,113.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.