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Finding the Fourth Proportional to 684,689.56, 944,942.22 and 394,310.63

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Solution

The fourth proportional to 684,689.56, 944,942.22 and 394,310.63 is: 544,189.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,689.56 : 944,942.22 = 394,310.63 : x
  2. Step 2: Convert to fraction form
    684,689.56/944,942.22 = 394,310.63/x
  3. Step 3: Cross multiply
    684,689.56x = 944,942.22 × 394,310.63
  4. Step 4: Simplify right side
    684,689.56x = 372,600,762,780.66
  5. Step 5: Solve for x
    x = 372,600,762,780.66/684,689.56
  6. Step 6: Final answer
    x = 544,189.35

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1.5x scale

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.