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Finding the Fourth Proportional to 613,998.50, 846,993.58 and 422,679.74

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Solution

The fourth proportional to 613,998.50, 846,993.58 and 422,679.74 is: 583,074.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,998.50 : 846,993.58 = 422,679.74 : x
  2. Step 2: Convert to fraction form
    613,998.50/846,993.58 = 422,679.74/x
  3. Step 3: Cross multiply
    613,998.50x = 846,993.58 × 422,679.74
  4. Step 4: Simplify right side
    613,998.50x = 358,007,020,884.40
  5. Step 5: Solve for x
    x = 358,007,020,884.40/613,998.50
  6. Step 6: Final answer
    x = 583,074.75

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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.