Home / 579,506.20-869,468.10-259,631.80

Finding the Fourth Proportional to 579,506.20, 869,468.10 and 259,631.80

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Solution

The fourth proportional to 579,506.20, 869,468.10 and 259,631.80 is: 389,541.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,506.20 : 869,468.10 = 259,631.80 : x
  2. Step 2: Convert to fraction form
    579,506.20/869,468.10 = 259,631.80/x
  3. Step 3: Cross multiply
    579,506.20x = 869,468.10 × 259,631.80
  4. Step 4: Simplify right side
    579,506.20x = 225,741,567,845.58
  5. Step 5: Solve for x
    x = 225,741,567,845.58/579,506.20
  6. Step 6: Final answer
    x = 389,541.25

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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.