Home / 1,263,128.49-1,743,129.54-690,168.63

Finding the Fourth Proportional to 1,263,128.49, 1,743,129.54 and 690,168.63

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Solution

The fourth proportional to 1,263,128.49, 1,743,129.54 and 690,168.63 is: 952,439.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,263,128.49 : 1,743,129.54 = 690,168.63 : x
  2. Step 2: Convert to fraction form
    1,263,128.49/1,743,129.54 = 690,168.63/x
  3. Step 3: Cross multiply
    1,263,128.49x = 1,743,129.54 × 690,168.63
  4. Step 4: Simplify right side
    1,263,128.49x = 1,203,053,326,534.33
  5. Step 5: Solve for x
    x = 1,203,053,326,534.33/1,263,128.49
  6. Step 6: Final answer
    x = 952,439.39

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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.