Home / 1,419,939.40-2,128,872.30-578,057.80

Finding the Fourth Proportional to 1,419,939.40, 2,128,872.30 and 578,057.80

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Solution

The fourth proportional to 1,419,939.40, 2,128,872.30 and 578,057.80 is: 866,664.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,419,939.40 : 2,128,872.30 = 578,057.80 : x
  2. Step 2: Convert to fraction form
    1,419,939.40/2,128,872.30 = 578,057.80/x
  3. Step 3: Cross multiply
    1,419,939.40x = 2,128,872.30 × 578,057.80
  4. Step 4: Simplify right side
    1,419,939.40x = 1,230,611,238,218.94
  5. Step 5: Solve for x
    x = 1,230,611,238,218.94/1,419,939.40
  6. Step 6: Final answer
    x = 866,664.62

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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.