Home / 705,912.80-1,059,128.40-285,231.20

Finding the Fourth Proportional to 705,912.80, 1,059,128.40 and 285,231.20

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Solution

The fourth proportional to 705,912.80, 1,059,128.40 and 285,231.20 is: 427,951.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    705,912.80 : 1,059,128.40 = 285,231.20 : x
  2. Step 2: Convert to fraction form
    705,912.80/1,059,128.40 = 285,231.20/x
  3. Step 3: Cross multiply
    705,912.80x = 1,059,128.40 × 285,231.20
  4. Step 4: Simplify right side
    705,912.80x = 302,096,464,486.08
  5. Step 5: Solve for x
    x = 302,096,464,486.08/705,912.80
  6. Step 6: Final answer
    x = 427,951.53

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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.