Home / 781,634.06-1,172,240.15-276,128.49

Finding the Fourth Proportional to 781,634.06, 1,172,240.15 and 276,128.49

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Solution

The fourth proportional to 781,634.06, 1,172,240.15 and 276,128.49 is: 414,118.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    781,634.06 : 1,172,240.15 = 276,128.49 : x
  2. Step 2: Convert to fraction form
    781,634.06/1,172,240.15 = 276,128.49/x
  3. Step 3: Cross multiply
    781,634.06x = 1,172,240.15 × 276,128.49
  4. Step 4: Simplify right side
    781,634.06x = 323,688,902,536.87
  5. Step 5: Solve for x
    x = 323,688,902,536.87/781,634.06
  6. Step 6: Final answer
    x = 414,118.22

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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.