Home / 899,589.30-1,241,399.18-491,687.78

Finding the Fourth Proportional to 899,589.30, 1,241,399.18 and 491,687.78

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Solution

The fourth proportional to 899,589.30, 1,241,399.18 and 491,687.78 is: 678,510.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    899,589.30 : 1,241,399.18 = 491,687.78 : x
  2. Step 2: Convert to fraction form
    899,589.30/1,241,399.18 = 491,687.78/x
  3. Step 3: Cross multiply
    899,589.30x = 1,241,399.18 × 491,687.78
  4. Step 4: Simplify right side
    899,589.30x = 610,380,801,930.24
  5. Step 5: Solve for x
    x = 610,380,801,930.24/899,589.30
  6. Step 6: Final answer
    x = 678,510.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.