Home / 1,531,123.92-2,112,933.60-842,781.06

Finding the Fourth Proportional to 1,531,123.92, 2,112,933.60 and 842,781.06

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Solution

The fourth proportional to 1,531,123.92, 2,112,933.60 and 842,781.06 is: 1,163,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,531,123.92 : 2,112,933.60 = 842,781.06 : x
  2. Step 2: Convert to fraction form
    1,531,123.92/2,112,933.60 = 842,781.06/x
  3. Step 3: Cross multiply
    1,531,123.92x = 2,112,933.60 × 842,781.06
  4. Step 4: Simplify right side
    1,531,123.92x = 1,780,740,419,117.62
  5. Step 5: Solve for x
    x = 1,780,740,419,117.62/1,531,123.92
  6. Step 6: Final answer
    x = 1,163,028.28

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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.