Home / 810,506.24-1,215,745.92-311,978.24

Finding the Fourth Proportional to 810,506.24, 1,215,745.92 and 311,978.24

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Solution

The fourth proportional to 810,506.24, 1,215,745.92 and 311,978.24 is: 467,962.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    810,506.24 : 1,215,745.92 = 311,978.24 : x
  2. Step 2: Convert to fraction form
    810,506.24/1,215,745.92 = 311,978.24/x
  3. Step 3: Cross multiply
    810,506.24x = 1,215,745.92 × 311,978.24
  4. Step 4: Simplify right side
    810,506.24x = 379,286,272,408.78
  5. Step 5: Solve for x
    x = 379,286,272,408.78/810,506.24
  6. Step 6: Final answer
    x = 467,962.19

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1.5x scale

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.