Home / 621,710.82-931,345.88-322,387.07

Finding the Fourth Proportional to 621,710.82, 931,345.88 and 322,387.07

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Solution

The fourth proportional to 621,710.82, 931,345.88 and 322,387.07 is: 482,947.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,710.82 : 931,345.88 = 322,387.07 : x
  2. Step 2: Convert to fraction form
    621,710.82/931,345.88 = 322,387.07/x
  3. Step 3: Cross multiply
    621,710.82x = 931,345.88 × 322,387.07
  4. Step 4: Simplify right side
    621,710.82x = 300,253,863,141.11
  5. Step 5: Solve for x
    x = 300,253,863,141.11/621,710.82
  6. Step 6: Final answer
    x = 482,947.78

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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.