Home / 1,137,976.88-1,707,219.54-428,011.07

Finding the Fourth Proportional to 1,137,976.88, 1,707,219.54 and 428,011.07

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Solution

The fourth proportional to 1,137,976.88, 1,707,219.54 and 428,011.07 is: 642,112.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,137,976.88 : 1,707,219.54 = 428,011.07 : x
  2. Step 2: Convert to fraction form
    1,137,976.88/1,707,219.54 = 428,011.07/x
  3. Step 3: Cross multiply
    1,137,976.88x = 1,707,219.54 × 428,011.07
  4. Step 4: Simplify right side
    1,137,976.88x = 730,708,853,504.21
  5. Step 5: Solve for x
    x = 730,708,853,504.21/1,137,976.88
  6. Step 6: Final answer
    x = 642,112.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.