Home / 525,928.56-726,131.40-311,137.44

Finding the Fourth Proportional to 525,928.56, 726,131.40 and 311,137.44

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Solution

The fourth proportional to 525,928.56, 726,131.40 and 311,137.44 is: 429,576.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,928.56 : 726,131.40 = 311,137.44 : x
  2. Step 2: Convert to fraction form
    525,928.56/726,131.40 = 311,137.44/x
  3. Step 3: Cross multiply
    525,928.56x = 726,131.40 × 311,137.44
  4. Step 4: Simplify right side
    525,928.56x = 225,926,664,899.62
  5. Step 5: Solve for x
    x = 225,926,664,899.62/525,928.56
  6. Step 6: Final answer
    x = 429,576.72

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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.