Home / 865,647.86-1,298,063.11-505,921.91

Finding the Fourth Proportional to 865,647.86, 1,298,063.11 and 505,921.91

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Solution

The fourth proportional to 865,647.86, 1,298,063.11 and 505,921.91 is: 758,644.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,647.86 : 1,298,063.11 = 505,921.91 : x
  2. Step 2: Convert to fraction form
    865,647.86/1,298,063.11 = 505,921.91/x
  3. Step 3: Cross multiply
    865,647.86x = 1,298,063.11 × 505,921.91
  4. Step 4: Simplify right side
    865,647.86x = 656,718,558,891.82
  5. Step 5: Solve for x
    x = 656,718,558,891.82/865,647.86
  6. Step 6: Final answer
    x = 758,644.01

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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.