Home / 727,728.40-1,091,203.80-254,429.20

Finding the Fourth Proportional to 727,728.40, 1,091,203.80 and 254,429.20

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Solution

The fourth proportional to 727,728.40, 1,091,203.80 and 254,429.20 is: 381,507.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,728.40 : 1,091,203.80 = 254,429.20 : x
  2. Step 2: Convert to fraction form
    727,728.40/1,091,203.80 = 254,429.20/x
  3. Step 3: Cross multiply
    727,728.40x = 1,091,203.80 × 254,429.20
  4. Step 4: Simplify right side
    727,728.40x = 277,634,109,870.96
  5. Step 5: Solve for x
    x = 277,634,109,870.96/727,728.40
  6. Step 6: Final answer
    x = 381,507.87

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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.