Home / 1,189,980.54-1,642,007.88-699,972.30

Finding the Fourth Proportional to 1,189,980.54, 1,642,007.88 and 699,972.30

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Solution

The fourth proportional to 1,189,980.54, 1,642,007.88 and 699,972.30 is: 965,864.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,980.54 : 1,642,007.88 = 699,972.30 : x
  2. Step 2: Convert to fraction form
    1,189,980.54/1,642,007.88 = 699,972.30/x
  3. Step 3: Cross multiply
    1,189,980.54x = 1,642,007.88 × 699,972.30
  4. Step 4: Simplify right side
    1,189,980.54x = 1,149,360,032,381.72
  5. Step 5: Solve for x
    x = 1,149,360,032,381.72/1,189,980.54
  6. Step 6: Final answer
    x = 965,864.56

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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.