Home / 1,109,659.80-1,664,584.07-389,939.40

Finding the Fourth Proportional to 1,109,659.80, 1,664,584.07 and 389,939.40

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Solution

The fourth proportional to 1,109,659.80, 1,664,584.07 and 389,939.40 is: 584,942.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,659.80 : 1,664,584.07 = 389,939.40 : x
  2. Step 2: Convert to fraction form
    1,109,659.80/1,664,584.07 = 389,939.40/x
  3. Step 3: Cross multiply
    1,109,659.80x = 1,664,584.07 × 389,939.40
  4. Step 4: Simplify right side
    1,109,659.80x = 649,086,913,749.07
  5. Step 5: Solve for x
    x = 649,086,913,749.07/1,109,659.80
  6. Step 6: Final answer
    x = 584,942.26

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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.