Home / 7,187,811,908.31-9,919,693,719.77-3,972,652,732.35

Finding the Fourth Proportional to 7,187,811,908.31, 9,919,693,719.77 and 3,972,652,732.35

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Solution

The fourth proportional to 7,187,811,908.31, 9,919,693,719.77 and 3,972,652,732.35 is: 5,482,544,460.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,187,811,908.31 : 9,919,693,719.77 = 3,972,652,732.35 : x
  2. Step 2: Convert to fraction form
    7,187,811,908.31/9,919,693,719.77 = 3,972,652,732.35/x
  3. Step 3: Cross multiply
    7,187,811,908.31x = 9,919,693,719.77 × 3,972,652,732.35
  4. Step 4: Simplify right side
    7,187,811,908.31x = 39,407,498,359,899,561,984
  5. Step 5: Solve for x
    x = 39,407,498,359,899,561,984/7,187,811,908.31
  6. Step 6: Final answer
    x = 5,482,544,460.34

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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.