Home / 639,013,749,743.37-881,866,694,607.81-353,872,269,839.37

Finding the Fourth Proportional to 639,013,749,743.37, 881,866,694,607.81 and 353,872,269,839.37

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Solution

The fourth proportional to 639,013,749,743.37, 881,866,694,607.81 and 353,872,269,839.37 is: 488,359,083,105.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,013,749,743.37 : 881,866,694,607.81 = 353,872,269,839.37 : x
  2. Step 2: Convert to fraction form
    639,013,749,743.37/881,866,694,607.81 = 353,872,269,839.37/x
  3. Step 3: Cross multiply
    639,013,749,743.37x = 881,866,694,607.81 × 353,872,269,839.37
  4. Step 4: Simplify right side
    639,013,749,743.37x = 312,068,168,916,608,233,766,912
  5. Step 5: Solve for x
    x = 312,068,168,916,608,233,766,912/639,013,749,743.37
  6. Step 6: Final answer
    x = 488,359,083,105.70

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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.