Home / 1,278,300,675.15-1,765,273,262.42-1,208,659,650.06

Finding the Fourth Proportional to 1,278,300,675.15, 1,765,273,262.42 and 1,208,659,650.06

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Solution

The fourth proportional to 1,278,300,675.15, 1,765,273,262.42 and 1,208,659,650.06 is: 1,669,102,273.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,300,675.15 : 1,765,273,262.42 = 1,208,659,650.06 : x
  2. Step 2: Convert to fraction form
    1,278,300,675.15/1,765,273,262.42 = 1,208,659,650.06/x
  3. Step 3: Cross multiply
    1,278,300,675.15x = 1,765,273,262.42 × 1,208,659,650.06
  4. Step 4: Simplify right side
    1,278,300,675.15x = 2,133,614,563,610,788,352
  5. Step 5: Solve for x
    x = 2,133,614,563,610,788,352/1,278,300,675.15
  6. Step 6: Final answer
    x = 1,669,102,273.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.