Home / 1,191,990.80-1,787,606.04-393,123.44

Finding the Fourth Proportional to 1,191,990.80, 1,787,606.04 and 393,123.44

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Solution

The fourth proportional to 1,191,990.80, 1,787,606.04 and 393,123.44 is: 589,559.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,191,990.80 : 1,787,606.04 = 393,123.44 : x
  2. Step 2: Convert to fraction form
    1,191,990.80/1,787,606.04 = 393,123.44/x
  3. Step 3: Cross multiply
    1,191,990.80x = 1,787,606.04 × 393,123.44
  4. Step 4: Simplify right side
    1,191,990.80x = 702,749,835,809.58
  5. Step 5: Solve for x
    x = 702,749,835,809.58/1,191,990.80
  6. Step 6: Final answer
    x = 589,559.78

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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.