Home / 919,217.64-1,379,047.92-288,131.43

Finding the Fourth Proportional to 919,217.64, 1,379,047.92 and 288,131.43

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Solution

The fourth proportional to 919,217.64, 1,379,047.92 and 288,131.43 is: 432,266.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,217.64 : 1,379,047.92 = 288,131.43 : x
  2. Step 2: Convert to fraction form
    919,217.64/1,379,047.92 = 288,131.43/x
  3. Step 3: Cross multiply
    919,217.64x = 1,379,047.92 × 288,131.43
  4. Step 4: Simplify right side
    919,217.64x = 397,347,049,228.13
  5. Step 5: Solve for x
    x = 397,347,049,228.13/919,217.64
  6. Step 6: Final answer
    x = 432,266.56

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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.