Home / 500,187.35-690,194.18-285,314.60

Finding the Fourth Proportional to 500,187.35, 690,194.18 and 285,314.60

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Solution

The fourth proportional to 500,187.35, 690,194.18 and 285,314.60 is: 393,697.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,187.35 : 690,194.18 = 285,314.60 : x
  2. Step 2: Convert to fraction form
    500,187.35/690,194.18 = 285,314.60/x
  3. Step 3: Cross multiply
    500,187.35x = 690,194.18 × 285,314.60
  4. Step 4: Simplify right side
    500,187.35x = 196,922,471,511.48
  5. Step 5: Solve for x
    x = 196,922,471,511.48/500,187.35
  6. Step 6: Final answer
    x = 393,697.43

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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.