Home / 686,366.12-947,183.60-376,268.15

Finding the Fourth Proportional to 686,366.12, 947,183.60 and 376,268.15

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Solution

The fourth proportional to 686,366.12, 947,183.60 and 376,268.15 is: 519,249.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,366.12 : 947,183.60 = 376,268.15 : x
  2. Step 2: Convert to fraction form
    686,366.12/947,183.60 = 376,268.15/x
  3. Step 3: Cross multiply
    686,366.12x = 947,183.60 × 376,268.15
  4. Step 4: Simplify right side
    686,366.12x = 356,395,014,265.08
  5. Step 5: Solve for x
    x = 356,395,014,265.08/686,366.12
  6. Step 6: Final answer
    x = 519,249.14

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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.