Home / 678,577.51-936,552.15-392,263.57

Finding the Fourth Proportional to 678,577.51, 936,552.15 and 392,263.57

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Solution

The fourth proportional to 678,577.51, 936,552.15 and 392,263.57 is: 541,390.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    678,577.51 : 936,552.15 = 392,263.57 : x
  2. Step 2: Convert to fraction form
    678,577.51/936,552.15 = 392,263.57/x
  3. Step 3: Cross multiply
    678,577.51x = 936,552.15 × 392,263.57
  4. Step 4: Simplify right side
    678,577.51x = 367,375,289,850.18
  5. Step 5: Solve for x
    x = 367,375,289,850.18/678,577.51
  6. Step 6: Final answer
    x = 541,390.31

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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.