Home / 638,998.08-881,811.60-352,520.56

Finding the Fourth Proportional to 638,998.08, 881,811.60 and 352,520.56

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Solution

The fourth proportional to 638,998.08, 881,811.60 and 352,520.56 is: 486,475.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,998.08 : 881,811.60 = 352,520.56 : x
  2. Step 2: Convert to fraction form
    638,998.08/881,811.60 = 352,520.56/x
  3. Step 3: Cross multiply
    638,998.08x = 881,811.60 × 352,520.56
  4. Step 4: Simplify right side
    638,998.08x = 310,856,719,046.50
  5. Step 5: Solve for x
    x = 310,856,719,046.50/638,998.08
  6. Step 6: Final answer
    x = 486,475.20

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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.