Home / 500,209.06-690,354.24-285,299.86

Finding the Fourth Proportional to 500,209.06, 690,354.24 and 285,299.86

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Solution

The fourth proportional to 500,209.06, 690,354.24 and 285,299.86 is: 393,751.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    500,209.06 : 690,354.24 = 285,299.86 : x
  2. Step 2: Convert to fraction form
    500,209.06/690,354.24 = 285,299.86/x
  3. Step 3: Cross multiply
    500,209.06x = 690,354.24 × 285,299.86
  4. Step 4: Simplify right side
    500,209.06x = 196,957,968,022.41
  5. Step 5: Solve for x
    x = 196,957,968,022.41/500,209.06
  6. Step 6: Final answer
    x = 393,751.30

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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.