Home / 1,389,494.55-1,917,536.54-777,642.51

Finding the Fourth Proportional to 1,389,494.55, 1,917,536.54 and 777,642.51

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Solution

The fourth proportional to 1,389,494.55, 1,917,536.54 and 777,642.51 is: 1,073,165.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,494.55 : 1,917,536.54 = 777,642.51 : x
  2. Step 2: Convert to fraction form
    1,389,494.55/1,917,536.54 = 777,642.51/x
  3. Step 3: Cross multiply
    1,389,494.55x = 1,917,536.54 × 777,642.51
  4. Step 4: Simplify right side
    1,389,494.55x = 1,491,157,927,982.32
  5. Step 5: Solve for x
    x = 1,491,157,927,982.32/1,389,494.55
  6. Step 6: Final answer
    x = 1,073,165.73

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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.