Home / 536,028.72-739,720.20-318,280.86

Finding the Fourth Proportional to 536,028.72, 739,720.20 and 318,280.86

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Solution

The fourth proportional to 536,028.72, 739,720.20 and 318,280.86 is: 439,227.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    536,028.72 : 739,720.20 = 318,280.86 : x
  2. Step 2: Convert to fraction form
    536,028.72/739,720.20 = 318,280.86/x
  3. Step 3: Cross multiply
    536,028.72x = 739,720.20 × 318,280.86
  4. Step 4: Simplify right side
    536,028.72x = 235,438,781,415.37
  5. Step 5: Solve for x
    x = 235,438,781,415.37/536,028.72
  6. Step 6: Final answer
    x = 439,227.92

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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.