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Finding the Fourth Proportional to 551,653.60, 827,480.40 and 512,287.60

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Solution

The fourth proportional to 551,653.60, 827,480.40 and 512,287.60 is: 768,431.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,653.60 : 827,480.40 = 512,287.60 : x
  2. Step 2: Convert to fraction form
    551,653.60/827,480.40 = 512,287.60/x
  3. Step 3: Cross multiply
    551,653.60x = 827,480.40 × 512,287.60
  4. Step 4: Simplify right side
    551,653.60x = 423,907,948,163.04
  5. Step 5: Solve for x
    x = 423,907,948,163.04/551,653.60
  6. Step 6: Final answer
    x = 768,431.40

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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.