Home / 639,013,900,777.68-881,866,903,035.64-353,872,420,873.70

Finding the Fourth Proportional to 639,013,900,777.68, 881,866,903,035.64 and 353,872,420,873.70

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Solution

The fourth proportional to 639,013,900,777.68, 881,866,903,035.64 and 353,872,420,873.70 is: 488,359,291,536.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,777.68 : 881,866,903,035.64 = 353,872,420,873.70 : x
  2. Step 2: Convert to fraction form
    639,013,900,777.68/881,866,903,035.64 = 353,872,420,873.70/x
  3. Step 3: Cross multiply
    639,013,900,777.68x = 881,866,903,035.64 × 353,872,420,873.70
  4. Step 4: Simplify right side
    639,013,900,777.68x = 312,068,375,865,614,414,118,912
  5. Step 5: Solve for x
    x = 312,068,375,865,614,414,118,912/639,013,900,777.68
  6. Step 6: Final answer
    x = 488,359,291,536.27

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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.