Home / 1,389,809.39-1,917,848.07-777,859.25

Finding the Fourth Proportional to 1,389,809.39, 1,917,848.07 and 777,859.25

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Solution

The fourth proportional to 1,389,809.39, 1,917,848.07 and 777,859.25 is: 1,073,396.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,809.39 : 1,917,848.07 = 777,859.25 : x
  2. Step 2: Convert to fraction form
    1,389,809.39/1,917,848.07 = 777,859.25/x
  3. Step 3: Cross multiply
    1,389,809.39x = 1,917,848.07 × 777,859.25
  4. Step 4: Simplify right side
    1,389,809.39x = 1,491,815,851,754.91
  5. Step 5: Solve for x
    x = 1,491,815,851,754.91/1,389,809.39
  6. Step 6: Final answer
    x = 1,073,396.01

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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.