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Finding the Fourth Proportional to 394,443.70, 591,665.55 and 394,443.70

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Solution

The fourth proportional to 394,443.70, 591,665.55 and 394,443.70 is: 591,665.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,443.70 : 591,665.55 = 394,443.70 : x
  2. Step 2: Convert to fraction form
    394,443.70/591,665.55 = 394,443.70/x
  3. Step 3: Cross multiply
    394,443.70x = 591,665.55 × 394,443.70
  4. Step 4: Simplify right side
    394,443.70x = 233,378,748,704.54
  5. Step 5: Solve for x
    x = 233,378,748,704.54/394,443.70
  6. Step 6: Final answer
    x = 591,665.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.