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Finding the Fourth Proportional to 1,370,856.46, 1,891,801.93 and 789,759

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Solution

The fourth proportional to 1,370,856.46, 1,891,801.93 and 789,759 is: 1,089,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,370,856.46 : 1,891,801.93 = 789,759 : x
  2. Step 2: Convert to fraction form
    1,370,856.46/1,891,801.93 = 789,759/x
  3. Step 3: Cross multiply
    1,370,856.46x = 1,891,801.93 × 789,759
  4. Step 4: Simplify right side
    1,370,856.46x = 1,494,067,600,434.87
  5. Step 5: Solve for x
    x = 1,494,067,600,434.87/1,370,856.46
  6. Step 6: Final answer
    x = 1,089,878.95

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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.