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Finding the Fourth Proportional to 489,950.51, 733,642.72 and 320,939.15

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Solution

The fourth proportional to 489,950.51, 733,642.72 and 320,939.15 is: 480,568.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    489,950.51 : 733,642.72 = 320,939.15 : x
  2. Step 2: Convert to fraction form
    489,950.51/733,642.72 = 320,939.15/x
  3. Step 3: Cross multiply
    489,950.51x = 733,642.72 × 320,939.15
  4. Step 4: Simplify right side
    489,950.51x = 235,454,666,489.93
  5. Step 5: Solve for x
    x = 235,454,666,489.93/489,950.51
  6. Step 6: Final answer
    x = 480,568.27

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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.