Home / 494,317.40-682,131.51-279,444.65

Finding the Fourth Proportional to 494,317.40, 682,131.51 and 279,444.65

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Solution

The fourth proportional to 494,317.40, 682,131.51 and 279,444.65 is: 385,618.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,317.40 : 682,131.51 = 279,444.65 : x
  2. Step 2: Convert to fraction form
    494,317.40/682,131.51 = 279,444.65/x
  3. Step 3: Cross multiply
    494,317.40x = 682,131.51 × 279,444.65
  4. Step 4: Simplify right side
    494,317.40x = 190,617,997,655.26
  5. Step 5: Solve for x
    x = 190,617,997,655.26/494,317.40
  6. Step 6: Final answer
    x = 385,618.63

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1.5x scale

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.