Home / 1,279,419,015.30-1,919,128,508.55-310,070,631.30

Finding the Fourth Proportional to 1,279,419,015.30, 1,919,128,508.55 and 310,070,631.30

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Solution

The fourth proportional to 1,279,419,015.30, 1,919,128,508.55 and 310,070,631.30 is: 465,105,943.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,279,419,015.30 : 1,919,128,508.55 = 310,070,631.30 : x
  2. Step 2: Convert to fraction form
    1,279,419,015.30/1,919,128,508.55 = 310,070,631.30/x
  3. Step 3: Cross multiply
    1,279,419,015.30x = 1,919,128,508.55 × 310,070,631.30
  4. Step 4: Simplify right side
    1,279,419,015.30x = 595,065,388,191,926,016
  5. Step 5: Solve for x
    x = 595,065,388,191,926,016/1,279,419,015.30
  6. Step 6: Final answer
    x = 465,105,943.46

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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.