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Finding the Fourth Proportional to 501,489, 692,066.97 and 275,134.50

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Solution

The fourth proportional to 501,489, 692,066.97 and 275,134.50 is: 379,692.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,489 : 692,066.97 = 275,134.50 : x
  2. Step 2: Convert to fraction form
    501,489/692,066.97 = 275,134.50/x
  3. Step 3: Cross multiply
    501,489x = 692,066.97 × 275,134.50
  4. Step 4: Simplify right side
    501,489x = 190,411,499,757.47
  5. Step 5: Solve for x
    x = 190,411,499,757.47/501,489
  6. Step 6: Final answer
    x = 379,692.28

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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.