Home / 789,868.74-1,090,015.55-427,291.70

Finding the Fourth Proportional to 789,868.74, 1,090,015.55 and 427,291.70

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Solution

The fourth proportional to 789,868.74, 1,090,015.55 and 427,291.70 is: 589,660.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    789,868.74 : 1,090,015.55 = 427,291.70 : x
  2. Step 2: Convert to fraction form
    789,868.74/1,090,015.55 = 427,291.70/x
  3. Step 3: Cross multiply
    789,868.74x = 1,090,015.55 × 427,291.70
  4. Step 4: Simplify right side
    789,868.74x = 465,754,589,799.40
  5. Step 5: Solve for x
    x = 465,754,589,799.40/789,868.74
  6. Step 6: Final answer
    x = 589,660.75

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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.