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Finding the Fourth Proportional to 1,008,299, 1,391,481.78 and 555,619.16

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Solution

The fourth proportional to 1,008,299, 1,391,481.78 and 555,619.16 is: 766,770.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,008,299 : 1,391,481.78 = 555,619.16 : x
  2. Step 2: Convert to fraction form
    1,008,299/1,391,481.78 = 555,619.16/x
  3. Step 3: Cross multiply
    1,008,299x = 1,391,481.78 × 555,619.16
  4. Step 4: Simplify right side
    1,008,299x = 773,133,937,758.91
  5. Step 5: Solve for x
    x = 773,133,937,758.91/1,008,299
  6. Step 6: Final answer
    x = 766,770.51

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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.