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Finding the Fourth Proportional to 404,411.20, 606,616.80 and 325,679.20

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Solution

The fourth proportional to 404,411.20, 606,616.80 and 325,679.20 is: 488,518.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,411.20 : 606,616.80 = 325,679.20 : x
  2. Step 2: Convert to fraction form
    404,411.20/606,616.80 = 325,679.20/x
  3. Step 3: Cross multiply
    404,411.20x = 606,616.80 × 325,679.20
  4. Step 4: Simplify right side
    404,411.20x = 197,562,474,130.56
  5. Step 5: Solve for x
    x = 197,562,474,130.56/404,411.20
  6. Step 6: Final answer
    x = 488,518.80

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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.