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Finding the Fourth Proportional to 547,252.80, 820,879.20 and 336,206.40

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Solution

The fourth proportional to 547,252.80, 820,879.20 and 336,206.40 is: 504,309.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,252.80 : 820,879.20 = 336,206.40 : x
  2. Step 2: Convert to fraction form
    547,252.80/820,879.20 = 336,206.40/x
  3. Step 3: Cross multiply
    547,252.80x = 820,879.20 × 336,206.40
  4. Step 4: Simplify right side
    547,252.80x = 275,984,840,666.88
  5. Step 5: Solve for x
    x = 275,984,840,666.88/547,252.80
  6. Step 6: Final answer
    x = 504,309.60

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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.