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Finding the Fourth Proportional to 551,615.60, 827,423.40 and 512,249.60

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Solution

The fourth proportional to 551,615.60, 827,423.40 and 512,249.60 is: 768,374.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,615.60 : 827,423.40 = 512,249.60 : x
  2. Step 2: Convert to fraction form
    551,615.60/827,423.40 = 512,249.60/x
  3. Step 3: Cross multiply
    551,615.60x = 827,423.40 × 512,249.60
  4. Step 4: Simplify right side
    551,615.60x = 423,847,305,680.64
  5. Step 5: Solve for x
    x = 423,847,305,680.64/551,615.60
  6. Step 6: Final answer
    x = 768,374.40

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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.