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Finding the Fourth Proportional to 555,431.88, 766,494.84 and 300,782.28

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Solution

The fourth proportional to 555,431.88, 766,494.84 and 300,782.28 is: 415,078.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    555,431.88 : 766,494.84 = 300,782.28 : x
  2. Step 2: Convert to fraction form
    555,431.88/766,494.84 = 300,782.28/x
  3. Step 3: Cross multiply
    555,431.88x = 766,494.84 × 300,782.28
  4. Step 4: Simplify right side
    555,431.88x = 230,548,065,583.44
  5. Step 5: Solve for x
    x = 230,548,065,583.44/555,431.88
  6. Step 6: Final answer
    x = 415,078.92

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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.