Home / 715,179.22-986,777.18-405,084.49

Finding the Fourth Proportional to 715,179.22, 986,777.18 and 405,084.49

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Solution

The fourth proportional to 715,179.22, 986,777.18 and 405,084.49 is: 558,920.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,179.22 : 986,777.18 = 405,084.49 : x
  2. Step 2: Convert to fraction form
    715,179.22/986,777.18 = 405,084.49/x
  3. Step 3: Cross multiply
    715,179.22x = 986,777.18 × 405,084.49
  4. Step 4: Simplify right side
    715,179.22x = 399,728,128,678.52
  5. Step 5: Solve for x
    x = 399,728,128,678.52/715,179.22
  6. Step 6: Final answer
    x = 558,920.22

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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.