Home / 751,864,809.87-1,128,028,145.72-358,893,087.51

Finding the Fourth Proportional to 751,864,809.87, 1,128,028,145.72 and 358,893,087.51

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Solution

The fourth proportional to 751,864,809.87, 1,128,028,145.72 and 358,893,087.51 is: 538,449,863.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    751,864,809.87 : 1,128,028,145.72 = 358,893,087.51 : x
  2. Step 2: Convert to fraction form
    751,864,809.87/1,128,028,145.72 = 358,893,087.51/x
  3. Step 3: Cross multiply
    751,864,809.87x = 1,128,028,145.72 × 358,893,087.51
  4. Step 4: Simplify right side
    751,864,809.87x = 404,841,504,013,836,480
  5. Step 5: Solve for x
    x = 404,841,504,013,836,480/751,864,809.87
  6. Step 6: Final answer
    x = 538,449,863.19

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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.