Home / 1,420,110.40-2,129,128.80-578,228.80

Finding the Fourth Proportional to 1,420,110.40, 2,129,128.80 and 578,228.80

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Solution

The fourth proportional to 1,420,110.40, 2,129,128.80 and 578,228.80 is: 866,921.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,420,110.40 : 2,129,128.80 = 578,228.80 : x
  2. Step 2: Convert to fraction form
    1,420,110.40/2,129,128.80 = 578,228.80/x
  3. Step 3: Cross multiply
    1,420,110.40x = 2,129,128.80 × 578,228.80
  4. Step 4: Simplify right side
    1,420,110.40x = 1,231,123,591,069.44
  5. Step 5: Solve for x
    x = 1,231,123,591,069.44/1,420,110.40
  6. Step 6: Final answer
    x = 866,921.04

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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.