Home / 1,189,982-1,642,009.90-699,973.72

Finding the Fourth Proportional to 1,189,982, 1,642,009.90 and 699,973.72

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Solution

The fourth proportional to 1,189,982, 1,642,009.90 and 699,973.72 is: 965,866.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,982 : 1,642,009.90 = 699,973.72 : x
  2. Step 2: Convert to fraction form
    1,189,982/1,642,009.90 = 699,973.72/x
  3. Step 3: Cross multiply
    1,189,982x = 1,642,009.90 × 699,973.72
  4. Step 4: Simplify right side
    1,189,982x = 1,149,363,777,979.83
  5. Step 5: Solve for x
    x = 1,149,363,777,979.83/1,189,982
  6. Step 6: Final answer
    x = 965,866.52

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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.