Home / 1,380,796.05-2,071,507.85-421,337.48

Finding the Fourth Proportional to 1,380,796.05, 2,071,507.85 and 421,337.48

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Solution

The fourth proportional to 1,380,796.05, 2,071,507.85 and 421,337.48 is: 632,101.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,796.05 : 2,071,507.85 = 421,337.48 : x
  2. Step 2: Convert to fraction form
    1,380,796.05/2,071,507.85 = 421,337.48/x
  3. Step 3: Cross multiply
    1,380,796.05x = 2,071,507.85 × 421,337.48
  4. Step 4: Simplify right side
    1,380,796.05x = 872,803,900,391.30
  5. Step 5: Solve for x
    x = 872,803,900,391.30/1,380,796.05
  6. Step 6: Final answer
    x = 632,101.97

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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.