Home / 687,687.40-1,031,755.20-345,954.46

Finding the Fourth Proportional to 687,687.40, 1,031,755.20 and 345,954.46

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Solution

The fourth proportional to 687,687.40, 1,031,755.20 and 345,954.46 is: 519,044.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,687.40 : 1,031,755.20 = 345,954.46 : x
  2. Step 2: Convert to fraction form
    687,687.40/1,031,755.20 = 345,954.46/x
  3. Step 3: Cross multiply
    687,687.40x = 1,031,755.20 × 345,954.46
  4. Step 4: Simplify right side
    687,687.40x = 356,940,313,068.19
  5. Step 5: Solve for x
    x = 356,940,313,068.19/687,687.40
  6. Step 6: Final answer
    x = 519,044.43

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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.