Home / 987,843,990.16-1,481,853,083.06-278,798,871.36

Finding the Fourth Proportional to 987,843,990.16, 1,481,853,083.06 and 278,798,871.36

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Solution

The fourth proportional to 987,843,990.16, 1,481,853,083.06 and 278,798,871.36 is: 418,222,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    987,843,990.16 : 1,481,853,083.06 = 278,798,871.36 : x
  2. Step 2: Convert to fraction form
    987,843,990.16/1,481,853,083.06 = 278,798,871.36/x
  3. Step 3: Cross multiply
    987,843,990.16x = 1,481,853,083.06 × 278,798,871.36
  4. Step 4: Simplify right side
    987,843,990.16x = 413,138,967,078,659,520
  5. Step 5: Solve for x
    x = 413,138,967,078,659,520/987,843,990.16
  6. Step 6: Final answer
    x = 418,222,888.63

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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.