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Finding the Fourth Proportional to 550,504, 759,696.80 and 321,218.92

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Solution

The fourth proportional to 550,504, 759,696.80 and 321,218.92 is: 443,282.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    550,504 : 759,696.80 = 321,218.92 : x
  2. Step 2: Convert to fraction form
    550,504/759,696.80 = 321,218.92/x
  3. Step 3: Cross multiply
    550,504x = 759,696.80 × 321,218.92
  4. Step 4: Simplify right side
    550,504x = 244,028,985,623.46
  5. Step 5: Solve for x
    x = 244,028,985,623.46/550,504
  6. Step 6: Final answer
    x = 443,282.86

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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.