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Finding the Fourth Proportional to 442,994.30, 664,491.45 and 396,338.30

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Solution

The fourth proportional to 442,994.30, 664,491.45 and 396,338.30 is: 594,507.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,994.30 : 664,491.45 = 396,338.30 : x
  2. Step 2: Convert to fraction form
    442,994.30/664,491.45 = 396,338.30/x
  3. Step 3: Cross multiply
    442,994.30x = 664,491.45 × 396,338.30
  4. Step 4: Simplify right side
    442,994.30x = 263,363,411,657.54
  5. Step 5: Solve for x
    x = 263,363,411,657.54/442,994.30
  6. Step 6: Final answer
    x = 594,507.45

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