Home / 621,712.82-931,348.88-322,389.06

Finding the Fourth Proportional to 621,712.82, 931,348.88 and 322,389.06

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Solution

The fourth proportional to 621,712.82, 931,348.88 and 322,389.06 is: 482,950.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,712.82 : 931,348.88 = 322,389.06 : x
  2. Step 2: Convert to fraction form
    621,712.82/931,348.88 = 322,389.06/x
  3. Step 3: Cross multiply
    621,712.82x = 931,348.88 × 322,389.06
  4. Step 4: Simplify right side
    621,712.82x = 300,256,689,955.25
  5. Step 5: Solve for x
    x = 300,256,689,955.25/621,712.82
  6. Step 6: Final answer
    x = 482,950.78

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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.