Home / 705,115.76-1,055,334.72-642,081.56

Finding the Fourth Proportional to 705,115.76, 1,055,334.72 and 642,081.56

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Solution

The fourth proportional to 705,115.76, 1,055,334.72 and 642,081.56 is: 960,992.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,115.76 : 1,055,334.72 = 642,081.56 : x
  2. Step 2: Convert to fraction form
    705,115.76/1,055,334.72 = 642,081.56/x
  3. Step 3: Cross multiply
    705,115.76x = 1,055,334.72 × 642,081.56
  4. Step 4: Simplify right side
    705,115.76x = 677,610,963,339.76
  5. Step 5: Solve for x
    x = 677,610,963,339.76/705,115.76
  6. Step 6: Final answer
    x = 960,992.51

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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.