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Finding the Fourth Proportional to 684,683.40, 944,863.90 and 374,589.88

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Solution

The fourth proportional to 684,683.40, 944,863.90 and 374,589.88 is: 516,934.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,683.40 : 944,863.90 = 374,589.88 : x
  2. Step 2: Convert to fraction form
    684,683.40/944,863.90 = 374,589.88/x
  3. Step 3: Cross multiply
    684,683.40x = 944,863.90 × 374,589.88
  4. Step 4: Simplify right side
    684,683.40x = 353,936,454,917.33
  5. Step 5: Solve for x
    x = 353,936,454,917.33/684,683.40
  6. Step 6: Final answer
    x = 516,934.48

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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.