Home / 1,131,117.20-1,560,971.54-621,832.40

Finding the Fourth Proportional to 1,131,117.20, 1,560,971.54 and 621,832.40

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Solution

The fourth proportional to 1,131,117.20, 1,560,971.54 and 621,832.40 is: 858,145.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131,117.20 : 1,560,971.54 = 621,832.40 : x
  2. Step 2: Convert to fraction form
    1,131,117.20/1,560,971.54 = 621,832.40/x
  3. Step 3: Cross multiply
    1,131,117.20x = 1,560,971.54 × 621,832.40
  4. Step 4: Simplify right side
    1,131,117.20x = 970,662,668,135.88
  5. Step 5: Solve for x
    x = 970,662,668,135.88/1,131,117.20
  6. Step 6: Final answer
    x = 858,145.09

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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.