Home / 980,721.13-1,353,429.80-550,992.64

Finding the Fourth Proportional to 980,721.13, 1,353,429.80 and 550,992.64

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Solution

The fourth proportional to 980,721.13, 1,353,429.80 and 550,992.64 is: 760,389.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,721.13 : 1,353,429.80 = 550,992.64 : x
  2. Step 2: Convert to fraction form
    980,721.13/1,353,429.80 = 550,992.64/x
  3. Step 3: Cross multiply
    980,721.13x = 1,353,429.80 × 550,992.64
  4. Step 4: Simplify right side
    980,721.13x = 745,729,858,556.67
  5. Step 5: Solve for x
    x = 745,729,858,556.67/980,721.13
  6. Step 6: Final answer
    x = 760,389.31

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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.