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Finding the Fourth Proportional to 550,555.58, 759,610.51 and 321,122.88

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Solution

The fourth proportional to 550,555.58, 759,610.51 and 321,122.88 is: 443,058.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,555.58 : 759,610.51 = 321,122.88 : x
  2. Step 2: Convert to fraction form
    550,555.58/759,610.51 = 321,122.88/x
  3. Step 3: Cross multiply
    550,555.58x = 759,610.51 × 321,122.88
  4. Step 4: Simplify right side
    550,555.58x = 243,928,313,846.66
  5. Step 5: Solve for x
    x = 243,928,313,846.66/550,555.58
  6. Step 6: Final answer
    x = 443,058.47

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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.