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Finding the Fourth Proportional to 716,548.98, 988,861.41 and 394,282.74

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Solution

The fourth proportional to 716,548.98, 988,861.41 and 394,282.74 is: 544,123.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,548.98 : 988,861.41 = 394,282.74 : x
  2. Step 2: Convert to fraction form
    716,548.98/988,861.41 = 394,282.74/x
  3. Step 3: Cross multiply
    716,548.98x = 988,861.41 × 394,282.74
  4. Step 4: Simplify right side
    716,548.98x = 389,890,986,215.06
  5. Step 5: Solve for x
    x = 389,890,986,215.06/716,548.98
  6. Step 6: Final answer
    x = 544,123.29

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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.