Home / 853,357.43-1,280,085.29-320,883.07

Finding the Fourth Proportional to 853,357.43, 1,280,085.29 and 320,883.07

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Solution

The fourth proportional to 853,357.43, 1,280,085.29 and 320,883.07 is: 481,343.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,357.43 : 1,280,085.29 = 320,883.07 : x
  2. Step 2: Convert to fraction form
    853,357.43/1,280,085.29 = 320,883.07/x
  3. Step 3: Cross multiply
    853,357.43x = 1,280,085.29 × 320,883.07
  4. Step 4: Simplify right side
    853,357.43x = 410,757,697,717.04
  5. Step 5: Solve for x
    x = 410,757,697,717.04/853,357.43
  6. Step 6: Final answer
    x = 481,343.08

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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.