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Finding the Fourth Proportional to 579,703.20, 869,554.80 and 327,760.80

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Solution

The fourth proportional to 579,703.20, 869,554.80 and 327,760.80 is: 491,641.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,703.20 : 869,554.80 = 327,760.80 : x
  2. Step 2: Convert to fraction form
    579,703.20/869,554.80 = 327,760.80/x
  3. Step 3: Cross multiply
    579,703.20x = 869,554.80 × 327,760.80
  4. Step 4: Simplify right side
    579,703.20x = 285,005,976,891.84
  5. Step 5: Solve for x
    x = 285,005,976,891.84/579,703.20
  6. Step 6: Final answer
    x = 491,641.20

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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.