Home / 1,438,989.96-2,157,346.33-540,331.61

Finding the Fourth Proportional to 1,438,989.96, 2,157,346.33 and 540,331.61

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Solution

The fourth proportional to 1,438,989.96, 2,157,346.33 and 540,331.61 is: 810,069.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438,989.96 : 2,157,346.33 = 540,331.61 : x
  2. Step 2: Convert to fraction form
    1,438,989.96/2,157,346.33 = 540,331.61/x
  3. Step 3: Cross multiply
    1,438,989.96x = 2,157,346.33 × 540,331.61
  4. Step 4: Simplify right side
    1,438,989.96x = 1,165,682,417,333.74
  5. Step 5: Solve for x
    x = 1,165,682,417,333.74/1,438,989.96
  6. Step 6: Final answer
    x = 810,069.88

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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.