Home / 1,273,127,921.70-1,909,691,882.55-1,212,862,512.30

Finding the Fourth Proportional to 1,273,127,921.70, 1,909,691,882.55 and 1,212,862,512.30

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Solution

The fourth proportional to 1,273,127,921.70, 1,909,691,882.55 and 1,212,862,512.30 is: 1,819,293,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,273,127,921.70 : 1,909,691,882.55 = 1,212,862,512.30 : x
  2. Step 2: Convert to fraction form
    1,273,127,921.70/1,909,691,882.55 = 1,212,862,512.30/x
  3. Step 3: Cross multiply
    1,273,127,921.70x = 1,909,691,882.55 × 1,212,862,512.30
  4. Step 4: Simplify right side
    1,273,127,921.70x = 2,316,193,694,388,509,184
  5. Step 5: Solve for x
    x = 2,316,193,694,388,509,184/1,273,127,921.70
  6. Step 6: Final answer
    x = 1,819,293,768.45

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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.