Home / 1,399,085.79-2,098,628.69-388,207.94

Finding the Fourth Proportional to 1,399,085.79, 2,098,628.69 and 388,207.94

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Solution

The fourth proportional to 1,399,085.79, 2,098,628.69 and 388,207.94 is: 582,311.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,085.79 : 2,098,628.69 = 388,207.94 : x
  2. Step 2: Convert to fraction form
    1,399,085.79/2,098,628.69 = 388,207.94/x
  3. Step 3: Cross multiply
    1,399,085.79x = 2,098,628.69 × 388,207.94
  4. Step 4: Simplify right side
    1,399,085.79x = 814,704,308,135.62
  5. Step 5: Solve for x
    x = 814,704,308,135.62/1,399,085.79
  6. Step 6: Final answer
    x = 582,311.90

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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.