Home / 639,013,900,639.23-881,866,902,844.73-353,872,420,735.23

Finding the Fourth Proportional to 639,013,900,639.23, 881,866,902,844.73 and 353,872,420,735.23

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Solution

The fourth proportional to 639,013,900,639.23, 881,866,902,844.73 and 353,872,420,735.23 is: 488,359,291,345.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,900,639.23 : 881,866,902,844.73 = 353,872,420,735.23 : x
  2. Step 2: Convert to fraction form
    639,013,900,639.23/881,866,902,844.73 = 353,872,420,735.23/x
  3. Step 3: Cross multiply
    639,013,900,639.23x = 881,866,902,844.73 × 353,872,420,735.23
  4. Step 4: Simplify right side
    639,013,900,639.23x = 312,068,375,675,944,497,577,984
  5. Step 5: Solve for x
    x = 312,068,375,675,944,497,577,984/639,013,900,639.23
  6. Step 6: Final answer
    x = 488,359,291,345.26

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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.