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Finding the Fourth Proportional to 703,785.74, 971,198.37 and 381,488.90

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Solution

The fourth proportional to 703,785.74, 971,198.37 and 381,488.90 is: 526,440.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,785.74 : 971,198.37 = 381,488.90 : x
  2. Step 2: Convert to fraction form
    703,785.74/971,198.37 = 381,488.90/x
  3. Step 3: Cross multiply
    703,785.74x = 971,198.37 × 381,488.90
  4. Step 4: Simplify right side
    703,785.74x = 370,501,397,853.09
  5. Step 5: Solve for x
    x = 370,501,397,853.09/703,785.74
  6. Step 6: Final answer
    x = 526,440.62

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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.