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Finding the Fourth Proportional to 641,365.98, 961,764.66 and 341,790.72

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Solution

The fourth proportional to 641,365.98, 961,764.66 and 341,790.72 is: 512,534.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,365.98 : 961,764.66 = 341,790.72 : x
  2. Step 2: Convert to fraction form
    641,365.98/961,764.66 = 341,790.72/x
  3. Step 3: Cross multiply
    641,365.98x = 961,764.66 × 341,790.72
  4. Step 4: Simplify right side
    641,365.98x = 328,722,235,611.96
  5. Step 5: Solve for x
    x = 328,722,235,611.96/641,365.98
  6. Step 6: Final answer
    x = 512,534.57

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Why These Related Problems?

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