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Finding the Fourth Proportional to 716,338.85, 988,549.94 and 394,073.46

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Solution

The fourth proportional to 716,338.85, 988,549.94 and 394,073.46 is: 543,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,338.85 : 988,549.94 = 394,073.46 : x
  2. Step 2: Convert to fraction form
    716,338.85/988,549.94 = 394,073.46/x
  3. Step 3: Cross multiply
    716,338.85x = 988,549.94 × 394,073.46
  4. Step 4: Simplify right side
    716,338.85x = 389,561,295,238.59
  5. Step 5: Solve for x
    x = 389,561,295,238.59/716,338.85
  6. Step 6: Final answer
    x = 543,822.65

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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.