Home / 639,489,614.40-957,958,963.20-445,619,937.60

Finding the Fourth Proportional to 639,489,614.40, 957,958,963.20 and 445,619,937.60

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Solution

The fourth proportional to 639,489,614.40, 957,958,963.20 and 445,619,937.60 is: 667,541,119.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,489,614.40 : 957,958,963.20 = 445,619,937.60 : x
  2. Step 2: Convert to fraction form
    639,489,614.40/957,958,963.20 = 445,619,937.60/x
  3. Step 3: Cross multiply
    639,489,614.40x = 957,958,963.20 × 445,619,937.60
  4. Step 4: Simplify right side
    639,489,614.40x = 426,885,613,404,544,768
  5. Step 5: Solve for x
    x = 426,885,613,404,544,768/639,489,614.40
  6. Step 6: Final answer
    x = 667,541,119.97

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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.