Home / 521,554.14-719,719.82-320,311.26

Finding the Fourth Proportional to 521,554.14, 719,719.82 and 320,311.26

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Solution

The fourth proportional to 521,554.14, 719,719.82 and 320,311.26 is: 442,014.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,554.14 : 719,719.82 = 320,311.26 : x
  2. Step 2: Convert to fraction form
    521,554.14/719,719.82 = 320,311.26/x
  3. Step 3: Cross multiply
    521,554.14x = 719,719.82 × 320,311.26
  4. Step 4: Simplify right side
    521,554.14x = 230,534,362,391.17
  5. Step 5: Solve for x
    x = 230,534,362,391.17/521,554.14
  6. Step 6: Final answer
    x = 442,014.25

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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.