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Finding the Fourth Proportional to 400,766.72, 600,818.95 and 187,429.66

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Solution

The fourth proportional to 400,766.72, 600,818.95 and 187,429.66 is: 280,989.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,766.72 : 600,818.95 = 187,429.66 : x
  2. Step 2: Convert to fraction form
    400,766.72/600,818.95 = 187,429.66/x
  3. Step 3: Cross multiply
    400,766.72x = 600,818.95 × 187,429.66
  4. Step 4: Simplify right side
    400,766.72x = 112,611,289,549.44
  5. Step 5: Solve for x
    x = 112,611,289,549.44/400,766.72
  6. Step 6: Final answer
    x = 280,989.62

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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.