Home / 1,380,019.34-1,904,406.30-768,171.21

Finding the Fourth Proportional to 1,380,019.34, 1,904,406.30 and 768,171.21

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Solution

The fourth proportional to 1,380,019.34, 1,904,406.30 and 768,171.21 is: 1,060,064.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,019.34 : 1,904,406.30 = 768,171.21 : x
  2. Step 2: Convert to fraction form
    1,380,019.34/1,904,406.30 = 768,171.21/x
  3. Step 3: Cross multiply
    1,380,019.34x = 1,904,406.30 × 768,171.21
  4. Step 4: Simplify right side
    1,380,019.34x = 1,462,910,091,802.62
  5. Step 5: Solve for x
    x = 1,462,910,091,802.62/1,380,019.34
  6. Step 6: Final answer
    x = 1,060,064.92

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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.