Home / 387,290,913.50-580,936,015.30-121,398,537.78

Finding the Fourth Proportional to 387,290,913.50, 580,936,015.30 and 121,398,537.78

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Solution

The fourth proportional to 387,290,913.50, 580,936,015.30 and 121,398,537.78 is: 182,097,695.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,290,913.50 : 580,936,015.30 = 121,398,537.78 : x
  2. Step 2: Convert to fraction form
    387,290,913.50/580,936,015.30 = 121,398,537.78/x
  3. Step 3: Cross multiply
    387,290,913.50x = 580,936,015.30 × 121,398,537.78
  4. Step 4: Simplify right side
    387,290,913.50x = 70,524,782,801,159,704
  5. Step 5: Solve for x
    x = 70,524,782,801,159,704/387,290,913.50
  6. Step 6: Final answer
    x = 182,097,695.41

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.