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Finding the Fourth Proportional to 570,759.12, 787,645.62 and 329,040.54

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Solution

The fourth proportional to 570,759.12, 787,645.62 and 329,040.54 is: 454,074.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,759.12 : 787,645.62 = 329,040.54 : x
  2. Step 2: Convert to fraction form
    570,759.12/787,645.62 = 329,040.54/x
  3. Step 3: Cross multiply
    570,759.12x = 787,645.62 × 329,040.54
  4. Step 4: Simplify right side
    570,759.12x = 259,167,340,133.44
  5. Step 5: Solve for x
    x = 259,167,340,133.44/570,759.12
  6. Step 6: Final answer
    x = 454,074.81

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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.