Home / 1,278,627.36-1,917,703.44-425,712.48

Finding the Fourth Proportional to 1,278,627.36, 1,917,703.44 and 425,712.48

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Solution

The fourth proportional to 1,278,627.36, 1,917,703.44 and 425,712.48 is: 638,489.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,627.36 : 1,917,703.44 = 425,712.48 : x
  2. Step 2: Convert to fraction form
    1,278,627.36/1,917,703.44 = 425,712.48/x
  3. Step 3: Cross multiply
    1,278,627.36x = 1,917,703.44 × 425,712.48
  4. Step 4: Simplify right side
    1,278,627.36x = 816,390,287,346.93
  5. Step 5: Solve for x
    x = 816,390,287,346.93/1,278,627.36
  6. Step 6: Final answer
    x = 638,489.61

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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.