Home / 1,289,939.58-1,780,077.30-738,637.38

Finding the Fourth Proportional to 1,289,939.58, 1,780,077.30 and 738,637.38

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Solution

The fourth proportional to 1,289,939.58, 1,780,077.30 and 738,637.38 is: 1,019,297.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,939.58 : 1,780,077.30 = 738,637.38 : x
  2. Step 2: Convert to fraction form
    1,289,939.58/1,780,077.30 = 738,637.38/x
  3. Step 3: Cross multiply
    1,289,939.58x = 1,780,077.30 × 738,637.38
  4. Step 4: Simplify right side
    1,289,939.58x = 1,314,831,633,069.47
  5. Step 5: Solve for x
    x = 1,314,831,633,069.47/1,289,939.58
  6. Step 6: Final answer
    x = 1,019,297.07

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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.