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Finding the Fourth Proportional to 477,631.60, 715,410.60 and 394,687.60

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Solution

The fourth proportional to 477,631.60, 715,410.60 and 394,687.60 is: 591,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    477,631.60 : 715,410.60 = 394,687.60 : x
  2. Step 2: Convert to fraction form
    477,631.60/715,410.60 = 394,687.60/x
  3. Step 3: Cross multiply
    477,631.60x = 715,410.60 × 394,687.60
  4. Step 4: Simplify right side
    477,631.60x = 282,363,692,728.56
  5. Step 5: Solve for x
    x = 282,363,692,728.56/477,631.60
  6. Step 6: Final answer
    x = 591,174.65

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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.