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Finding the Fourth Proportional to 716,452.60, 988,665.30 and 394,110.28

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Solution

The fourth proportional to 716,452.60, 988,665.30 and 394,110.28 is: 543,850.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,452.60 : 988,665.30 = 394,110.28 : x
  2. Step 2: Convert to fraction form
    716,452.60/988,665.30 = 394,110.28/x
  3. Step 3: Cross multiply
    716,452.60x = 988,665.30 × 394,110.28
  4. Step 4: Simplify right side
    716,452.60x = 389,643,158,209.28
  5. Step 5: Solve for x
    x = 389,643,158,209.28/716,452.60
  6. Step 6: Final answer
    x = 543,850.57

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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.