Home / 1,431,894.54-1,976,021.82-787,356.30

Finding the Fourth Proportional to 1,431,894.54, 1,976,021.82 and 787,356.30

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Solution

The fourth proportional to 1,431,894.54, 1,976,021.82 and 787,356.30 is: 1,086,555.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,894.54 : 1,976,021.82 = 787,356.30 : x
  2. Step 2: Convert to fraction form
    1,431,894.54/1,976,021.82 = 787,356.30/x
  3. Step 3: Cross multiply
    1,431,894.54x = 1,976,021.82 × 787,356.30
  4. Step 4: Simplify right side
    1,431,894.54x = 1,555,833,228,914.47
  5. Step 5: Solve for x
    x = 1,555,833,228,914.47/1,431,894.54
  6. Step 6: Final answer
    x = 1,086,555.74

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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.