Home / 1,380,885.30-2,071,444.86-421,555.86

Finding the Fourth Proportional to 1,380,885.30, 2,071,444.86 and 421,555.86

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Solution

The fourth proportional to 1,380,885.30, 2,071,444.86 and 421,555.86 is: 632,369.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,380,885.30 : 2,071,444.86 = 421,555.86 : x
  2. Step 2: Convert to fraction form
    1,380,885.30/2,071,444.86 = 421,555.86/x
  3. Step 3: Cross multiply
    1,380,885.30x = 2,071,444.86 × 421,555.86
  4. Step 4: Simplify right side
    1,380,885.30x = 873,229,719,399.88
  5. Step 5: Solve for x
    x = 873,229,719,399.88/1,380,885.30
  6. Step 6: Final answer
    x = 632,369.48

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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.