Home / 387,290,913.63-580,936,015.49-121,398,537.90

Finding the Fourth Proportional to 387,290,913.63, 580,936,015.49 and 121,398,537.90

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Solution

The fourth proportional to 387,290,913.63, 580,936,015.49 and 121,398,537.90 is: 182,097,695.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,290,913.63 : 580,936,015.49 = 121,398,537.90 : x
  2. Step 2: Convert to fraction form
    387,290,913.63/580,936,015.49 = 121,398,537.90/x
  3. Step 3: Cross multiply
    387,290,913.63x = 580,936,015.49 × 121,398,537.90
  4. Step 4: Simplify right side
    387,290,913.63x = 70,524,782,895,390,096
  5. Step 5: Solve for x
    x = 70,524,782,895,390,096/387,290,913.63
  6. Step 6: Final answer
    x = 182,097,695.59

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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.