Home / 639,013,900,643.22-881,866,902,850.24-353,872,420,739.22

Finding the Fourth Proportional to 639,013,900,643.22, 881,866,902,850.24 and 353,872,420,739.22

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Solution

The fourth proportional to 639,013,900,643.22, 881,866,902,850.24 and 353,872,420,739.22 is: 488,359,291,350.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,643.22 : 881,866,902,850.24 = 353,872,420,739.22 : x
  2. Step 2: Convert to fraction form
    639,013,900,643.22/881,866,902,850.24 = 353,872,420,739.22/x
  3. Step 3: Cross multiply
    639,013,900,643.22x = 881,866,902,850.24 × 353,872,420,739.22
  4. Step 4: Simplify right side
    639,013,900,643.22x = 312,068,375,681,412,930,469,888
  5. Step 5: Solve for x
    x = 312,068,375,681,412,930,469,888/639,013,900,643.22
  6. Step 6: Final answer
    x = 488,359,291,350.77

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.