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Finding the Fourth Proportional to 716,847.57, 989,242.07 and 394,550.73

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Solution

The fourth proportional to 716,847.57, 989,242.07 and 394,550.73 is: 544,475.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,847.57 : 989,242.07 = 394,550.73 : x
  2. Step 2: Convert to fraction form
    716,847.57/989,242.07 = 394,550.73/x
  3. Step 3: Cross multiply
    716,847.57x = 989,242.07 × 394,550.73
  4. Step 4: Simplify right side
    716,847.57x = 390,306,178,892.46
  5. Step 5: Solve for x
    x = 390,306,178,892.46/716,847.57
  6. Step 6: Final answer
    x = 544,475.83

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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.