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Finding the Fourth Proportional to 870,662.69, 1,302,615.06 and 763,238.61

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Solution

The fourth proportional to 870,662.69, 1,302,615.06 and 763,238.61 is: 1,141,895.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    870,662.69 : 1,302,615.06 = 763,238.61 : x
  2. Step 2: Convert to fraction form
    870,662.69/1,302,615.06 = 763,238.61/x
  3. Step 3: Cross multiply
    870,662.69x = 1,302,615.06 × 763,238.61
  4. Step 4: Simplify right side
    870,662.69x = 994,206,107,759.47
  5. Step 5: Solve for x
    x = 994,206,107,759.47/870,662.69
  6. Step 6: Final answer
    x = 1,141,895.85

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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.