Home / 1,289,334.40-1,931,343.78-755,236.20

Finding the Fourth Proportional to 1,289,334.40, 1,931,343.78 and 755,236.20

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Solution

The fourth proportional to 1,289,334.40, 1,931,343.78 and 755,236.20 is: 1,131,297.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,334.40 : 1,931,343.78 = 755,236.20 : x
  2. Step 2: Convert to fraction form
    1,289,334.40/1,931,343.78 = 755,236.20/x
  3. Step 3: Cross multiply
    1,289,334.40x = 1,931,343.78 × 755,236.20
  4. Step 4: Simplify right side
    1,289,334.40x = 1,458,620,737,300.84
  5. Step 5: Solve for x
    x = 1,458,620,737,300.84/1,289,334.40
  6. Step 6: Final answer
    x = 1,131,297.46

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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.