Home / 1,431,996.32-1,976,101.80-787,378.16

Finding the Fourth Proportional to 1,431,996.32, 1,976,101.80 and 787,378.16

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Solution

The fourth proportional to 1,431,996.32, 1,976,101.80 and 787,378.16 is: 1,086,552.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,996.32 : 1,976,101.80 = 787,378.16 : x
  2. Step 2: Convert to fraction form
    1,431,996.32/1,976,101.80 = 787,378.16/x
  3. Step 3: Cross multiply
    1,431,996.32x = 1,976,101.80 × 787,378.16
  4. Step 4: Simplify right side
    1,431,996.32x = 1,555,939,399,256.69
  5. Step 5: Solve for x
    x = 1,555,939,399,256.69/1,431,996.32
  6. Step 6: Final answer
    x = 1,086,552.65

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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.