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Finding the Fourth Proportional to 555,412.44, 766,468.98 and 300,763.56

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Solution

The fourth proportional to 555,412.44, 766,468.98 and 300,763.56 is: 415,053.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,412.44 : 766,468.98 = 300,763.56 : x
  2. Step 2: Convert to fraction form
    555,412.44/766,468.98 = 300,763.56/x
  3. Step 3: Cross multiply
    555,412.44x = 766,468.98 × 300,763.56
  4. Step 4: Simplify right side
    555,412.44x = 230,525,939,054.37
  5. Step 5: Solve for x
    x = 230,525,939,054.37/555,412.44
  6. Step 6: Final answer
    x = 415,053.61

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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.