Home / 756,257,788.39-1,043,640,296.72-421,751,428.14

Finding the Fourth Proportional to 756,257,788.39, 1,043,640,296.72 and 421,751,428.14

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Solution

The fourth proportional to 756,257,788.39, 1,043,640,296.72 and 421,751,428.14 is: 582,019,507.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    756,257,788.39 : 1,043,640,296.72 = 421,751,428.14 : x
  2. Step 2: Convert to fraction form
    756,257,788.39/1,043,640,296.72 = 421,751,428.14/x
  3. Step 3: Cross multiply
    756,257,788.39x = 1,043,640,296.72 × 421,751,428.14
  4. Step 4: Simplify right side
    756,257,788.39x = 440,156,785,604,004,608
  5. Step 5: Solve for x
    x = 440,156,785,604,004,608/756,257,788.39
  6. Step 6: Final answer
    x = 582,019,507.58

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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.