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Finding the Fourth Proportional to 547,769.80, 821,654.70 and 336,723.40

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Solution

The fourth proportional to 547,769.80, 821,654.70 and 336,723.40 is: 505,085.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,769.80 : 821,654.70 = 336,723.40 : x
  2. Step 2: Convert to fraction form
    547,769.80/821,654.70 = 336,723.40/x
  3. Step 3: Cross multiply
    547,769.80x = 821,654.70 × 336,723.40
  4. Step 4: Simplify right side
    547,769.80x = 276,670,364,209.98
  5. Step 5: Solve for x
    x = 276,670,364,209.98/547,769.80
  6. Step 6: Final answer
    x = 505,085.10

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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.