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Finding the Fourth Proportional to 541,389.20, 810,334.20 and 422,416.40

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Solution

The fourth proportional to 541,389.20, 810,334.20 and 422,416.40 is: 632,259.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,389.20 : 810,334.20 = 422,416.40 : x
  2. Step 2: Convert to fraction form
    541,389.20/810,334.20 = 422,416.40/x
  3. Step 3: Cross multiply
    541,389.20x = 810,334.20 × 422,416.40
  4. Step 4: Simplify right side
    541,389.20x = 342,298,455,560.88
  5. Step 5: Solve for x
    x = 342,298,455,560.88/541,389.20
  6. Step 6: Final answer
    x = 632,259.48

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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.