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Finding the Fourth Proportional to 702,620.88, 969,619.14 and 380,330.82

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Solution

The fourth proportional to 702,620.88, 969,619.14 and 380,330.82 is: 524,857.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,620.88 : 969,619.14 = 380,330.82 : x
  2. Step 2: Convert to fraction form
    702,620.88/969,619.14 = 380,330.82/x
  3. Step 3: Cross multiply
    702,620.88x = 969,619.14 × 380,330.82
  4. Step 4: Simplify right side
    702,620.88x = 368,776,042,603.90
  5. Step 5: Solve for x
    x = 368,776,042,603.90/702,620.88
  6. Step 6: Final answer
    x = 524,857.79

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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.