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Finding the Fourth Proportional to 716,336.60, 988,546.84 and 394,071.21

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Solution

The fourth proportional to 716,336.60, 988,546.84 and 394,071.21 is: 543,819.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,336.60 : 988,546.84 = 394,071.21 : x
  2. Step 2: Convert to fraction form
    716,336.60/988,546.84 = 394,071.21/x
  3. Step 3: Cross multiply
    716,336.60x = 988,546.84 × 394,071.21
  4. Step 4: Simplify right side
    716,336.60x = 389,557,849,138.39
  5. Step 5: Solve for x
    x = 389,557,849,138.39/716,336.60
  6. Step 6: Final answer
    x = 543,819.56

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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.