Home / 500,186.85-690,193.49-285,314.10

Finding the Fourth Proportional to 500,186.85, 690,193.49 and 285,314.10

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Solution

The fourth proportional to 500,186.85, 690,193.49 and 285,314.10 is: 393,696.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,186.85 : 690,193.49 = 285,314.10 : x
  2. Step 2: Convert to fraction form
    500,186.85/690,193.49 = 285,314.10/x
  3. Step 3: Cross multiply
    500,186.85x = 690,193.49 × 285,314.10
  4. Step 4: Simplify right side
    500,186.85x = 196,921,934,425.21
  5. Step 5: Solve for x
    x = 196,921,934,425.21/500,186.85
  6. Step 6: Final answer
    x = 393,696.74

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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.