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Finding the Fourth Proportional to 703,611.07, 970,986.72 and 381,321.15

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Solution

The fourth proportional to 703,611.07, 970,986.72 and 381,321.15 is: 526,225.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,611.07 : 970,986.72 = 381,321.15 : x
  2. Step 2: Convert to fraction form
    703,611.07/970,986.72 = 381,321.15/x
  3. Step 3: Cross multiply
    703,611.07x = 970,986.72 × 381,321.15
  4. Step 4: Simplify right side
    703,611.07x = 370,257,770,493.88
  5. Step 5: Solve for x
    x = 370,257,770,493.88/703,611.07
  6. Step 6: Final answer
    x = 526,225.05

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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.