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Finding the Fourth Proportional to 702,260.76, 969,112.94 and 379,963.78

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Solution

The fourth proportional to 702,260.76, 969,112.94 and 379,963.78 is: 524,346.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    702,260.76 : 969,112.94 = 379,963.78 : x
  2. Step 2: Convert to fraction form
    702,260.76/969,112.94 = 379,963.78/x
  3. Step 3: Cross multiply
    702,260.76x = 969,112.94 × 379,963.78
  4. Step 4: Simplify right side
    702,260.76x = 368,227,815,929.31
  5. Step 5: Solve for x
    x = 368,227,815,929.31/702,260.76
  6. Step 6: Final answer
    x = 524,346.28

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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.