Home / 1,138,296.72-1,707,511.91-428,330.91

Finding the Fourth Proportional to 1,138,296.72, 1,707,511.91 and 428,330.91

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Solution

The fourth proportional to 1,138,296.72, 1,707,511.91 and 428,330.91 is: 642,521.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,138,296.72 : 1,707,511.91 = 428,330.91 : x
  2. Step 2: Convert to fraction form
    1,138,296.72/1,707,511.91 = 428,330.91/x
  3. Step 3: Cross multiply
    1,138,296.72x = 1,707,511.91 × 428,330.91
  4. Step 4: Simplify right side
    1,138,296.72x = 731,380,128,104.48
  5. Step 5: Solve for x
    x = 731,380,128,104.48/1,138,296.72
  6. Step 6: Final answer
    x = 642,521.51

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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.