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Finding the Fourth Proportional to 553,577.43, 763,993.31 and 338,859.39

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Solution

The fourth proportional to 553,577.43, 763,993.31 and 338,859.39 is: 467,660.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,577.43 : 763,993.31 = 338,859.39 : x
  2. Step 2: Convert to fraction form
    553,577.43/763,993.31 = 338,859.39/x
  3. Step 3: Cross multiply
    553,577.43x = 763,993.31 × 338,859.39
  4. Step 4: Simplify right side
    553,577.43x = 258,886,308,161.36
  5. Step 5: Solve for x
    x = 258,886,308,161.36/553,577.43
  6. Step 6: Final answer
    x = 467,660.52

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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.