Home / 721,687.43-1,081,816.72-341,936.75

Finding the Fourth Proportional to 721,687.43, 1,081,816.72 and 341,936.75

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Solution

The fourth proportional to 721,687.43, 1,081,816.72 and 341,936.75 is: 512,566.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,687.43 : 1,081,816.72 = 341,936.75 : x
  2. Step 2: Convert to fraction form
    721,687.43/1,081,816.72 = 341,936.75/x
  3. Step 3: Cross multiply
    721,687.43x = 1,081,816.72 × 341,936.75
  4. Step 4: Simplify right side
    721,687.43x = 369,912,893,332.46
  5. Step 5: Solve for x
    x = 369,912,893,332.46/721,687.43
  6. Step 6: Final answer
    x = 512,566.63

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1.5x scale

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.