Home / 815,424.68-1,222,597.13-389,026.31

Finding the Fourth Proportional to 815,424.68, 1,222,597.13 and 389,026.31

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Solution

The fourth proportional to 815,424.68, 1,222,597.13 and 389,026.31 is: 583,281.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    815,424.68 : 1,222,597.13 = 389,026.31 : x
  2. Step 2: Convert to fraction form
    815,424.68/1,222,597.13 = 389,026.31/x
  3. Step 3: Cross multiply
    815,424.68x = 1,222,597.13 × 389,026.31
  4. Step 4: Simplify right side
    815,424.68x = 475,622,442,042.37
  5. Step 5: Solve for x
    x = 475,622,442,042.37/815,424.68
  6. Step 6: Final answer
    x = 583,281.89

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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.