Home / 659,986.89-989,997.42-210,707.37

Finding the Fourth Proportional to 659,986.89, 989,997.42 and 210,707.37

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Solution

The fourth proportional to 659,986.89, 989,997.42 and 210,707.37 is: 316,066.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    659,986.89 : 989,997.42 = 210,707.37 : x
  2. Step 2: Convert to fraction form
    659,986.89/989,997.42 = 210,707.37/x
  3. Step 3: Cross multiply
    659,986.89x = 989,997.42 × 210,707.37
  4. Step 4: Simplify right side
    659,986.89x = 208,599,752,674.99
  5. Step 5: Solve for x
    x = 208,599,752,674.99/659,986.89
  6. Step 6: Final answer
    x = 316,066.51

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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.