Home / 1,387,888,587.97-2,081,900,148.62-455,128,920.37

Finding the Fourth Proportional to 1,387,888,587.97, 2,081,900,148.62 and 455,128,920.37

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Solution

The fourth proportional to 1,387,888,587.97, 2,081,900,148.62 and 455,128,920.37 is: 682,715,439.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,387,888,587.97 : 2,081,900,148.62 = 455,128,920.37 : x
  2. Step 2: Convert to fraction form
    1,387,888,587.97/2,081,900,148.62 = 455,128,920.37/x
  3. Step 3: Cross multiply
    1,387,888,587.97x = 2,081,900,148.62 × 455,128,920.37
  4. Step 4: Simplify right side
    1,387,888,587.97x = 947,532,966,965,394,816
  5. Step 5: Solve for x
    x = 947,532,966,965,394,816/1,387,888,587.97
  6. Step 6: Final answer
    x = 682,715,439.25

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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.