Home / 385,629.20-579,826.20-324,803.60

Finding the Fourth Proportional to 385,629.20, 579,826.20 and 324,803.60

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Solution

The fourth proportional to 385,629.20, 579,826.20 and 324,803.60 is: 488,369.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,629.20 : 579,826.20 = 324,803.60 : x
  2. Step 2: Convert to fraction form
    385,629.20/579,826.20 = 324,803.60/x
  3. Step 3: Cross multiply
    385,629.20x = 579,826.20 × 324,803.60
  4. Step 4: Simplify right side
    385,629.20x = 188,329,637,134.32
  5. Step 5: Solve for x
    x = 188,329,637,134.32/385,629.20
  6. Step 6: Final answer
    x = 488,369.75

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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.