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Finding the Fourth Proportional to 667,904.94, 999,626.67 and 397,154.34

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Solution

The fourth proportional to 667,904.94, 999,626.67 and 397,154.34 is: 594,405.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,904.94 : 999,626.67 = 397,154.34 : x
  2. Step 2: Convert to fraction form
    667,904.94/999,626.67 = 397,154.34/x
  3. Step 3: Cross multiply
    667,904.94x = 999,626.67 × 397,154.34
  4. Step 4: Simplify right side
    667,904.94x = 397,006,070,370.25
  5. Step 5: Solve for x
    x = 397,006,070,370.25/667,904.94
  6. Step 6: Final answer
    x = 594,405.05

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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.