Home / 1,279,448,001.20-1,919,172,079.56-310,099,617.20

Finding the Fourth Proportional to 1,279,448,001.20, 1,919,172,079.56 and 310,099,617.20

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Solution

The fourth proportional to 1,279,448,001.20, 1,919,172,079.56 and 310,099,617.20 is: 465,149,444.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,448,001.20 : 1,919,172,079.56 = 310,099,617.20 : x
  2. Step 2: Convert to fraction form
    1,279,448,001.20/1,919,172,079.56 = 310,099,617.20/x
  3. Step 3: Cross multiply
    1,279,448,001.20x = 1,919,172,079.56 × 310,099,617.20
  4. Step 4: Simplify right side
    1,279,448,001.20x = 595,134,527,212,483,840
  5. Step 5: Solve for x
    x = 595,134,527,212,483,840/1,279,448,001.20
  6. Step 6: Final answer
    x = 465,149,444.65

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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.