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Finding the Fourth Proportional to 409,631.70, 613,871.55 and 325,535.70

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Solution

The fourth proportional to 409,631.70, 613,871.55 and 325,535.70 is: 487,845.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    409,631.70 : 613,871.55 = 325,535.70 : x
  2. Step 2: Convert to fraction form
    409,631.70/613,871.55 = 325,535.70/x
  3. Step 3: Cross multiply
    409,631.70x = 613,871.55 × 325,535.70
  4. Step 4: Simplify right side
    409,631.70x = 199,837,104,739.34
  5. Step 5: Solve for x
    x = 199,837,104,739.34/409,631.70
  6. Step 6: Final answer
    x = 487,845.80

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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.