Home / 513,215,992.80-769,823,989.20-476,936,287.20

Finding the Fourth Proportional to 513,215,992.80, 769,823,989.20 and 476,936,287.20

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Solution

The fourth proportional to 513,215,992.80, 769,823,989.20 and 476,936,287.20 is: 715,404,430.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    513,215,992.80 : 769,823,989.20 = 476,936,287.20 : x
  2. Step 2: Convert to fraction form
    513,215,992.80/769,823,989.20 = 476,936,287.20/x
  3. Step 3: Cross multiply
    513,215,992.80x = 769,823,989.20 × 476,936,287.20
  4. Step 4: Simplify right side
    513,215,992.80x = 367,156,995,206,540,928
  5. Step 5: Solve for x
    x = 367,156,995,206,540,928/513,215,992.80
  6. Step 6: Final answer
    x = 715,404,430.80

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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.