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Finding the Fourth Proportional to 891,797.83, 1,338,642.68 and 789,876.80

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Solution

The fourth proportional to 891,797.83, 1,338,642.68 and 789,876.80 is: 1,185,653.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    891,797.83 : 1,338,642.68 = 789,876.80 : x
  2. Step 2: Convert to fraction form
    891,797.83/1,338,642.68 = 789,876.80/x
  3. Step 3: Cross multiply
    891,797.83x = 1,338,642.68 × 789,876.80
  4. Step 4: Simplify right side
    891,797.83x = 1,057,362,791,703.30
  5. Step 5: Solve for x
    x = 1,057,362,791,703.30/891,797.83
  6. Step 6: Final answer
    x = 1,185,653.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.