Home / 1,109,905.70-1,664,858.55-985,902.80

Finding the Fourth Proportional to 1,109,905.70, 1,664,858.55 and 985,902.80

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Solution

The fourth proportional to 1,109,905.70, 1,664,858.55 and 985,902.80 is: 1,478,854.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,905.70 : 1,664,858.55 = 985,902.80 : x
  2. Step 2: Convert to fraction form
    1,109,905.70/1,664,858.55 = 985,902.80/x
  3. Step 3: Cross multiply
    1,109,905.70x = 1,664,858.55 × 985,902.80
  4. Step 4: Simplify right side
    1,109,905.70x = 1,641,388,706,048.94
  5. Step 5: Solve for x
    x = 1,641,388,706,048.94/1,109,905.70
  6. Step 6: Final answer
    x = 1,478,854.20

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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.