Home / 521,534.14-719,692.20-320,291.26

Finding the Fourth Proportional to 521,534.14, 719,692.20 and 320,291.26

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Solution

The fourth proportional to 521,534.14, 719,692.20 and 320,291.26 is: 441,986.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,534.14 : 719,692.20 = 320,291.26 : x
  2. Step 2: Convert to fraction form
    521,534.14/719,692.20 = 320,291.26/x
  3. Step 3: Cross multiply
    521,534.14x = 719,692.20 × 320,291.26
  4. Step 4: Simplify right side
    521,534.14x = 230,511,121,550.17
  5. Step 5: Solve for x
    x = 230,511,121,550.17/521,534.14
  6. Step 6: Final answer
    x = 441,986.64

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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.