Home / 680,939.40-1,021,992.30-302,442.60

Finding the Fourth Proportional to 680,939.40, 1,021,992.30 and 302,442.60

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Solution

The fourth proportional to 680,939.40, 1,021,992.30 and 302,442.60 is: 453,922.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,939.40 : 1,021,992.30 = 302,442.60 : x
  2. Step 2: Convert to fraction form
    680,939.40/1,021,992.30 = 302,442.60/x
  3. Step 3: Cross multiply
    680,939.40x = 1,021,992.30 × 302,442.60
  4. Step 4: Simplify right side
    680,939.40x = 309,094,008,391.98
  5. Step 5: Solve for x
    x = 309,094,008,391.98/680,939.40
  6. Step 6: Final answer
    x = 453,922.93

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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.