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Finding the Fourth Proportional to 554,994.70, 765,705.72 and 361,313.98

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Solution

The fourth proportional to 554,994.70, 765,705.72 and 361,313.98 is: 498,491.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,994.70 : 765,705.72 = 361,313.98 : x
  2. Step 2: Convert to fraction form
    554,994.70/765,705.72 = 361,313.98/x
  3. Step 3: Cross multiply
    554,994.70x = 765,705.72 × 361,313.98
  4. Step 4: Simplify right side
    554,994.70x = 276,660,181,201.97
  5. Step 5: Solve for x
    x = 276,660,181,201.97/554,994.70
  6. Step 6: Final answer
    x = 498,491.57

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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.