Home / 716,049.46-987,906.42-405,918.79

Finding the Fourth Proportional to 716,049.46, 987,906.42 and 405,918.79

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Solution

The fourth proportional to 716,049.46, 987,906.42 and 405,918.79 is: 560,030.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,049.46 : 987,906.42 = 405,918.79 : x
  2. Step 2: Convert to fraction form
    716,049.46/987,906.42 = 405,918.79/x
  3. Step 3: Cross multiply
    716,049.46x = 987,906.42 × 405,918.79
  4. Step 4: Simplify right side
    716,049.46x = 401,009,780,381.91
  5. Step 5: Solve for x
    x = 401,009,780,381.91/716,049.46
  6. Step 6: Final answer
    x = 560,030.84

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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.