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Finding the Fourth Proportional to 534,018.20, 800,055.30 and 422,432.60

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Solution

The fourth proportional to 534,018.20, 800,055.30 and 422,432.60 is: 632,880.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,018.20 : 800,055.30 = 422,432.60 : x
  2. Step 2: Convert to fraction form
    534,018.20/800,055.30 = 422,432.60/x
  3. Step 3: Cross multiply
    534,018.20x = 800,055.30 × 422,432.60
  4. Step 4: Simplify right side
    534,018.20x = 337,969,440,522.78
  5. Step 5: Solve for x
    x = 337,969,440,522.78/534,018.20
  6. Step 6: Final answer
    x = 632,880.00

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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.