Home / 1,224,000.80-1,836,001.20-664,128.80

Finding the Fourth Proportional to 1,224,000.80, 1,836,001.20 and 664,128.80

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Solution

The fourth proportional to 1,224,000.80, 1,836,001.20 and 664,128.80 is: 996,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,224,000.80 : 1,836,001.20 = 664,128.80 : x
  2. Step 2: Convert to fraction form
    1,224,000.80/1,836,001.20 = 664,128.80/x
  3. Step 3: Cross multiply
    1,224,000.80x = 1,836,001.20 × 664,128.80
  4. Step 4: Simplify right side
    1,224,000.80x = 1,219,341,273,754.56
  5. Step 5: Solve for x
    x = 1,219,341,273,754.56/1,224,000.80
  6. Step 6: Final answer
    x = 996,193.20

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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.