Home / 639,013,900,668.40-881,866,902,884.94-353,872,420,764.31

Finding the Fourth Proportional to 639,013,900,668.40, 881,866,902,884.94 and 353,872,420,764.31

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Solution

The fourth proportional to 639,013,900,668.40, 881,866,902,884.94 and 353,872,420,764.31 is: 488,359,291,385.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,668.40 : 881,866,902,884.94 = 353,872,420,764.31 : x
  2. Step 2: Convert to fraction form
    639,013,900,668.40/881,866,902,884.94 = 353,872,420,764.31/x
  3. Step 3: Cross multiply
    639,013,900,668.40x = 881,866,902,884.94 × 353,872,420,764.31
  4. Step 4: Simplify right side
    639,013,900,668.40x = 312,068,375,715,818,369,974,272
  5. Step 5: Solve for x
    x = 312,068,375,715,818,369,974,272/639,013,900,668.40
  6. Step 6: Final answer
    x = 488,359,291,385.37

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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.