Home / 639,013,900,649.70-881,866,902,859.20-353,872,420,745.70

Finding the Fourth Proportional to 639,013,900,649.70, 881,866,902,859.20 and 353,872,420,745.70

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Solution

The fourth proportional to 639,013,900,649.70, 881,866,902,859.20 and 353,872,420,745.70 is: 488,359,291,359.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,649.70 : 881,866,902,859.20 = 353,872,420,745.70 : x
  2. Step 2: Convert to fraction form
    639,013,900,649.70/881,866,902,859.20 = 353,872,420,745.70/x
  3. Step 3: Cross multiply
    639,013,900,649.70x = 881,866,902,859.20 × 353,872,420,745.70
  4. Step 4: Simplify right side
    639,013,900,649.70x = 312,068,375,690,298,144,063,488
  5. Step 5: Solve for x
    x = 312,068,375,690,298,144,063,488/639,013,900,649.70
  6. Step 6: Final answer
    x = 488,359,291,359.72

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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.