Home / 1,276,108.20-1,761,107.76-703,148.22

Finding the Fourth Proportional to 1,276,108.20, 1,761,107.76 and 703,148.22

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Solution

The fourth proportional to 1,276,108.20, 1,761,107.76 and 703,148.22 is: 970,387.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,276,108.20 : 1,761,107.76 = 703,148.22 : x
  2. Step 2: Convert to fraction form
    1,276,108.20/1,761,107.76 = 703,148.22/x
  3. Step 3: Cross multiply
    1,276,108.20x = 1,761,107.76 × 703,148.22
  4. Step 4: Simplify right side
    1,276,108.20x = 1,238,319,786,672.19
  5. Step 5: Solve for x
    x = 1,238,319,786,672.19/1,276,108.20
  6. Step 6: Final answer
    x = 970,387.77

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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.