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Finding the Fourth Proportional to 641,127.61, 961,692.62 and 262,048.07

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Solution

The fourth proportional to 641,127.61, 961,692.62 and 262,048.07 is: 393,072.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,127.61 : 961,692.62 = 262,048.07 : x
  2. Step 2: Convert to fraction form
    641,127.61/961,692.62 = 262,048.07/x
  3. Step 3: Cross multiply
    641,127.61x = 961,692.62 × 262,048.07
  4. Step 4: Simplify right side
    641,127.61x = 252,009,693,393.47
  5. Step 5: Solve for x
    x = 252,009,693,393.47/641,127.61
  6. Step 6: Final answer
    x = 393,072.59

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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.