Home / 728,049.80-1,091,783.10-254,491.40

Finding the Fourth Proportional to 728,049.80, 1,091,783.10 and 254,491.40

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Solution

The fourth proportional to 728,049.80, 1,091,783.10 and 254,491.40 is: 381,635.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,049.80 : 1,091,783.10 = 254,491.40 : x
  2. Step 2: Convert to fraction form
    728,049.80/1,091,783.10 = 254,491.40/x
  3. Step 3: Cross multiply
    728,049.80x = 1,091,783.10 × 254,491.40
  4. Step 4: Simplify right side
    728,049.80x = 277,849,409,615.34
  5. Step 5: Solve for x
    x = 277,849,409,615.34/728,049.80
  6. Step 6: Final answer
    x = 381,635.17

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.