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Finding the Fourth Proportional to 555,052.54, 765,972.51 and 300,403.73

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Solution

The fourth proportional to 555,052.54, 765,972.51 and 300,403.73 is: 414,557.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,052.54 : 765,972.51 = 300,403.73 : x
  2. Step 2: Convert to fraction form
    555,052.54/765,972.51 = 300,403.73/x
  3. Step 3: Cross multiply
    555,052.54x = 765,972.51 × 300,403.73
  4. Step 4: Simplify right side
    555,052.54x = 230,100,999,081.46
  5. Step 5: Solve for x
    x = 230,100,999,081.46/555,052.54
  6. Step 6: Final answer
    x = 414,557.15

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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.