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Finding the Fourth Proportional to 555,491.31, 766,577.28 and 300,843.51

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Solution

The fourth proportional to 555,491.31, 766,577.28 and 300,843.51 is: 415,163.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,491.31 : 766,577.28 = 300,843.51 : x
  2. Step 2: Convert to fraction form
    555,491.31/766,577.28 = 300,843.51/x
  3. Step 3: Cross multiply
    555,491.31x = 766,577.28 × 300,843.51
  4. Step 4: Simplify right side
    555,491.31x = 230,619,799,601.45
  5. Step 5: Solve for x
    x = 230,619,799,601.45/555,491.31
  6. Step 6: Final answer
    x = 415,163.65

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1.5x scale

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.