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Finding the Fourth Proportional to 621,806.86, 933,213.02 and 322,373.12

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Solution

The fourth proportional to 621,806.86, 933,213.02 and 322,373.12 is: 483,820.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,806.86 : 933,213.02 = 322,373.12 : x
  2. Step 2: Convert to fraction form
    621,806.86/933,213.02 = 322,373.12/x
  3. Step 3: Cross multiply
    621,806.86x = 933,213.02 × 322,373.12
  4. Step 4: Simplify right side
    621,806.86x = 300,842,786,604.09
  5. Step 5: Solve for x
    x = 300,842,786,604.09/621,806.86
  6. Step 6: Final answer
    x = 483,820.31

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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.