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Finding the Fourth Proportional to 550,408.20, 825,612.30 and 340,456.20

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Solution

The fourth proportional to 550,408.20, 825,612.30 and 340,456.20 is: 510,684.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,408.20 : 825,612.30 = 340,456.20 : x
  2. Step 2: Convert to fraction form
    550,408.20/825,612.30 = 340,456.20/x
  3. Step 3: Cross multiply
    550,408.20x = 825,612.30 × 340,456.20
  4. Step 4: Simplify right side
    550,408.20x = 281,084,826,331.26
  5. Step 5: Solve for x
    x = 281,084,826,331.26/550,408.20
  6. Step 6: Final answer
    x = 510,684.30

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Double scale
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Similar ratio
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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.