Home / 1,224,112.87-1,689,168.31-680,214.21

Finding the Fourth Proportional to 1,224,112.87, 1,689,168.31 and 680,214.21

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Solution

The fourth proportional to 1,224,112.87, 1,689,168.31 and 680,214.21 is: 938,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,112.87 : 1,689,168.31 = 680,214.21 : x
  2. Step 2: Convert to fraction form
    1,224,112.87/1,689,168.31 = 680,214.21/x
  3. Step 3: Cross multiply
    1,224,112.87x = 1,689,168.31 × 680,214.21
  4. Step 4: Simplify right side
    1,224,112.87x = 1,148,996,283,334.97
  5. Step 5: Solve for x
    x = 1,148,996,283,334.97/1,224,112.87
  6. Step 6: Final answer
    x = 938,635.90

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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.