Home / 639,013,900,646.20-881,866,902,854.40-353,872,420,742.19

Finding the Fourth Proportional to 639,013,900,646.20, 881,866,902,854.40 and 353,872,420,742.19

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Solution

The fourth proportional to 639,013,900,646.20, 881,866,902,854.40 and 353,872,420,742.19 is: 488,359,291,354.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,646.20 : 881,866,902,854.40 = 353,872,420,742.19 : x
  2. Step 2: Convert to fraction form
    639,013,900,646.20/881,866,902,854.40 = 353,872,420,742.19/x
  3. Step 3: Cross multiply
    639,013,900,646.20x = 881,866,902,854.40 × 353,872,420,742.19
  4. Step 4: Simplify right side
    639,013,900,646.20x = 312,068,375,685,504,222,363,648
  5. Step 5: Solve for x
    x = 312,068,375,685,504,222,363,648/639,013,900,646.20
  6. Step 6: Final answer
    x = 488,359,291,354.89

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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.