Home / 690,640.86-1,036,048.77-192,004.86

Finding the Fourth Proportional to 690,640.86, 1,036,048.77 and 192,004.86

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Solution

The fourth proportional to 690,640.86, 1,036,048.77 and 192,004.86 is: 288,031.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    690,640.86 : 1,036,048.77 = 192,004.86 : x
  2. Step 2: Convert to fraction form
    690,640.86/1,036,048.77 = 192,004.86/x
  3. Step 3: Cross multiply
    690,640.86x = 1,036,048.77 × 192,004.86
  4. Step 4: Simplify right side
    690,640.86x = 198,926,399,037.02
  5. Step 5: Solve for x
    x = 198,926,399,037.02/690,640.86
  6. Step 6: Final answer
    x = 288,031.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.