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Finding the Fourth Proportional to 621,997.97, 858,439.67 and 350,118.63

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Solution

The fourth proportional to 621,997.97, 858,439.67 and 350,118.63 is: 483,210.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,997.97 : 858,439.67 = 350,118.63 : x
  2. Step 2: Convert to fraction form
    621,997.97/858,439.67 = 350,118.63/x
  3. Step 3: Cross multiply
    621,997.97x = 858,439.67 × 350,118.63
  4. Step 4: Simplify right side
    621,997.97x = 300,555,719,447.46
  5. Step 5: Solve for x
    x = 300,555,719,447.46/621,997.97
  6. Step 6: Final answer
    x = 483,210.13

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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.