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Finding the Fourth Proportional to 684,455.60, 944,443.80 and 394,011.02

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Solution

The fourth proportional to 684,455.60, 944,443.80 and 394,011.02 is: 543,674.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    684,455.60 : 944,443.80 = 394,011.02 : x
  2. Step 2: Convert to fraction form
    684,455.60/944,443.80 = 394,011.02/x
  3. Step 3: Cross multiply
    684,455.60x = 944,443.80 × 394,011.02
  4. Step 4: Simplify right side
    684,455.60x = 372,121,265,361.73
  5. Step 5: Solve for x
    x = 372,121,265,361.73/684,455.60
  6. Step 6: Final answer
    x = 543,674.81

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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.