Home / 639,013,900,647.69-881,866,902,856.44-353,872,420,743.69

Finding the Fourth Proportional to 639,013,900,647.69, 881,866,902,856.44 and 353,872,420,743.69

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Solution

The fourth proportional to 639,013,900,647.69, 881,866,902,856.44 and 353,872,420,743.69 is: 488,359,291,356.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,647.69 : 881,866,902,856.44 = 353,872,420,743.69 : x
  2. Step 2: Convert to fraction form
    639,013,900,647.69/881,866,902,856.44 = 353,872,420,743.69/x
  3. Step 3: Cross multiply
    639,013,900,647.69x = 881,866,902,856.44 × 353,872,420,743.69
  4. Step 4: Simplify right side
    639,013,900,647.69x = 312,068,375,687,548,895,232,000
  5. Step 5: Solve for x
    x = 312,068,375,687,548,895,232,000/639,013,900,647.69
  6. Step 6: Final answer
    x = 488,359,291,356.95

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Double scale
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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.