Home / 714,226.86-985,634.73-391,939.56

Finding the Fourth Proportional to 714,226.86, 985,634.73 and 391,939.56

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Solution

The fourth proportional to 714,226.86, 985,634.73 and 391,939.56 is: 540,877.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,226.86 : 985,634.73 = 391,939.56 : x
  2. Step 2: Convert to fraction form
    714,226.86/985,634.73 = 391,939.56/x
  3. Step 3: Cross multiply
    714,226.86x = 985,634.73 × 391,939.56
  4. Step 4: Simplify right side
    714,226.86x = 386,309,242,396.92
  5. Step 5: Solve for x
    x = 386,309,242,396.92/714,226.86
  6. Step 6: Final answer
    x = 540,877.51

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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.