Home / 1,229,342.45-1,696,513.48-678,121.40

Finding the Fourth Proportional to 1,229,342.45, 1,696,513.48 and 678,121.40

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Solution

The fourth proportional to 1,229,342.45, 1,696,513.48 and 678,121.40 is: 935,819.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,229,342.45 : 1,696,513.48 = 678,121.40 : x
  2. Step 2: Convert to fraction form
    1,229,342.45/1,696,513.48 = 678,121.40/x
  3. Step 3: Cross multiply
    1,229,342.45x = 1,696,513.48 × 678,121.40
  4. Step 4: Simplify right side
    1,229,342.45x = 1,150,442,098,722.45
  5. Step 5: Solve for x
    x = 1,150,442,098,722.45/1,229,342.45
  6. Step 6: Final answer
    x = 935,819.06

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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.