Home / 919,508.81-1,379,315.12-279,833.45

Finding the Fourth Proportional to 919,508.81, 1,379,315.12 and 279,833.45

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Solution

The fourth proportional to 919,508.81, 1,379,315.12 and 279,833.45 is: 419,765.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,508.81 : 1,379,315.12 = 279,833.45 : x
  2. Step 2: Convert to fraction form
    919,508.81/1,379,315.12 = 279,833.45/x
  3. Step 3: Cross multiply
    919,508.81x = 1,379,315.12 × 279,833.45
  4. Step 4: Simplify right side
    919,508.81x = 385,978,500,371.02
  5. Step 5: Solve for x
    x = 385,978,500,371.02/919,508.81
  6. Step 6: Final answer
    x = 419,765.96

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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.