Home / 1,389,703.36-1,917,770.83-769,449.24

Finding the Fourth Proportional to 1,389,703.36, 1,917,770.83 and 769,449.24

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Solution

The fourth proportional to 1,389,703.36, 1,917,770.83 and 769,449.24 is: 1,061,828.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,389,703.36 : 1,917,770.83 = 769,449.24 : x
  2. Step 2: Convert to fraction form
    1,389,703.36/1,917,770.83 = 769,449.24/x
  3. Step 3: Cross multiply
    1,389,703.36x = 1,917,770.83 × 769,449.24
  4. Step 4: Simplify right side
    1,389,703.36x = 1,475,627,307,637.67
  5. Step 5: Solve for x
    x = 1,475,627,307,637.67/1,389,703.36
  6. Step 6: Final answer
    x = 1,061,828.98

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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.