Home / 728,048.80-1,091,781.60-254,490.40

Finding the Fourth Proportional to 728,048.80, 1,091,781.60 and 254,490.40

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Solution

The fourth proportional to 728,048.80, 1,091,781.60 and 254,490.40 is: 381,633.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    728,048.80 : 1,091,781.60 = 254,490.40 : x
  2. Step 2: Convert to fraction form
    728,048.80/1,091,781.60 = 254,490.40/x
  3. Step 3: Cross multiply
    728,048.80x = 1,091,781.60 × 254,490.40
  4. Step 4: Simplify right side
    728,048.80x = 277,847,936,096.64
  5. Step 5: Solve for x
    x = 277,847,936,096.64/728,048.80
  6. Step 6: Final answer
    x = 381,633.67

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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.