Home / 494,395.07-682,014.80-312,801.17

Finding the Fourth Proportional to 494,395.07, 682,014.80 and 312,801.17

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Solution

The fourth proportional to 494,395.07, 682,014.80 and 312,801.17 is: 431,507.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    494,395.07 : 682,014.80 = 312,801.17 : x
  2. Step 2: Convert to fraction form
    494,395.07/682,014.80 = 312,801.17/x
  3. Step 3: Cross multiply
    494,395.07x = 682,014.80 × 312,801.17
  4. Step 4: Simplify right side
    494,395.07x = 213,335,024,769.25
  5. Step 5: Solve for x
    x = 213,335,024,769.25/494,395.07
  6. Step 6: Final answer
    x = 431,507.19

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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.