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Finding the Fourth Proportional to 703,361.88, 970,639.62 and 381,074.20

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Solution

The fourth proportional to 703,361.88, 970,639.62 and 381,074.20 is: 525,882.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    703,361.88 : 970,639.62 = 381,074.20 : x
  2. Step 2: Convert to fraction form
    703,361.88/970,639.62 = 381,074.20/x
  3. Step 3: Cross multiply
    703,361.88x = 970,639.62 × 381,074.20
  4. Step 4: Simplify right side
    703,361.88x = 369,885,716,679.80
  5. Step 5: Solve for x
    x = 369,885,716,679.80/703,361.88
  6. Step 6: Final answer
    x = 525,882.52

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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.