Home / 1,230,976.89-1,699,031.54-721,843.29

Finding the Fourth Proportional to 1,230,976.89, 1,699,031.54 and 721,843.29

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Solution

The fourth proportional to 1,230,976.89, 1,699,031.54 and 721,843.29 is: 996,309.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,230,976.89 : 1,699,031.54 = 721,843.29 : x
  2. Step 2: Convert to fraction form
    1,230,976.89/1,699,031.54 = 721,843.29/x
  3. Step 3: Cross multiply
    1,230,976.89x = 1,699,031.54 × 721,843.29
  4. Step 4: Simplify right side
    1,230,976.89x = 1,226,434,516,647.37
  5. Step 5: Solve for x
    x = 1,226,434,516,647.37/1,230,976.89
  6. Step 6: Final answer
    x = 996,309.94

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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.