Home / 1,451,640.80-2,175,128.40-1,213,695.20

Finding the Fourth Proportional to 1,451,640.80, 2,175,128.40 and 1,213,695.20

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Solution

The fourth proportional to 1,451,640.80, 2,175,128.40 and 1,213,695.20 is: 1,818,592.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,451,640.80 : 2,175,128.40 = 1,213,695.20 : x
  2. Step 2: Convert to fraction form
    1,451,640.80/2,175,128.40 = 1,213,695.20/x
  3. Step 3: Cross multiply
    1,451,640.80x = 2,175,128.40 × 1,213,695.20
  4. Step 4: Simplify right side
    1,451,640.80x = 2,639,942,898,463.68
  5. Step 5: Solve for x
    x = 2,639,942,898,463.68/1,451,640.80
  6. Step 6: Final answer
    x = 1,818,592.38

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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.