Home / 716,025.87-988,081.88-393,749.55

Finding the Fourth Proportional to 716,025.87, 988,081.88 and 393,749.55

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Solution

The fourth proportional to 716,025.87, 988,081.88 and 393,749.55 is: 543,355.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,025.87 : 988,081.88 = 393,749.55 : x
  2. Step 2: Convert to fraction form
    716,025.87/988,081.88 = 393,749.55/x
  3. Step 3: Cross multiply
    716,025.87x = 988,081.88 × 393,749.55
  4. Step 4: Simplify right side
    716,025.87x = 389,056,793,644.41
  5. Step 5: Solve for x
    x = 389,056,793,644.41/716,025.87
  6. Step 6: Final answer
    x = 543,355.78

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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.