Home / 1,380,065.12-1,904,545.76-768,179.04

Finding the Fourth Proportional to 1,380,065.12, 1,904,545.76 and 768,179.04

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Solution

The fourth proportional to 1,380,065.12, 1,904,545.76 and 768,179.04 is: 1,060,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,065.12 : 1,904,545.76 = 768,179.04 : x
  2. Step 2: Convert to fraction form
    1,380,065.12/1,904,545.76 = 768,179.04/x
  3. Step 3: Cross multiply
    1,380,065.12x = 1,904,545.76 × 768,179.04
  4. Step 4: Simplify right side
    1,380,065.12x = 1,463,032,137,604.01
  5. Step 5: Solve for x
    x = 1,463,032,137,604.01/1,380,065.12
  6. Step 6: Final answer
    x = 1,060,118.19

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.