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Finding the Fourth Proportional to 890,768.80, 1,336,023.60 and 259,616.80

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Solution

The fourth proportional to 890,768.80, 1,336,023.60 and 259,616.80 is: 389,387.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    890,768.80 : 1,336,023.60 = 259,616.80 : x
  2. Step 2: Convert to fraction form
    890,768.80/1,336,023.60 = 259,616.80/x
  3. Step 3: Cross multiply
    890,768.80x = 1,336,023.60 × 259,616.80
  4. Step 4: Simplify right side
    890,768.80x = 346,854,171,756.48
  5. Step 5: Solve for x
    x = 346,854,171,756.48/890,768.80
  6. Step 6: Final answer
    x = 389,387.43

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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.