Home / 639,639,988,538.94-959,459,924,545.92-281,491,962,020.64

Finding the Fourth Proportional to 639,639,988,538.94, 959,459,924,545.92 and 281,491,962,020.64

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Solution

The fourth proportional to 639,639,988,538.94, 959,459,924,545.92 and 281,491,962,020.64 is: 422,237,917,390.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,639,988,538.94 : 959,459,924,545.92 = 281,491,962,020.64 : x
  2. Step 2: Convert to fraction form
    639,639,988,538.94/959,459,924,545.92 = 281,491,962,020.64/x
  3. Step 3: Cross multiply
    639,639,988,538.94x = 959,459,924,545.92 × 281,491,962,020.64
  4. Step 4: Simplify right side
    639,639,988,538.94x = 270,080,256,640,606,275,633,152
  5. Step 5: Solve for x
    x = 270,080,256,640,606,275,633,152/639,639,988,538.94
  6. Step 6: Final answer
    x = 422,237,917,390.88

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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.