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Finding the Fourth Proportional to 638,534.80, 957,667.80 and 322,694.80

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Solution

The fourth proportional to 638,534.80, 957,667.80 and 322,694.80 is: 483,974.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,534.80 : 957,667.80 = 322,694.80 : x
  2. Step 2: Convert to fraction form
    638,534.80/957,667.80 = 322,694.80/x
  3. Step 3: Cross multiply
    638,534.80x = 957,667.80 × 322,694.80
  4. Step 4: Simplify right side
    638,534.80x = 309,034,419,187.44
  5. Step 5: Solve for x
    x = 309,034,419,187.44/638,534.80
  6. Step 6: Final answer
    x = 483,974.28

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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.