Home / 680,932.40-1,021,981.80-302,435.60

Finding the Fourth Proportional to 680,932.40, 1,021,981.80 and 302,435.60

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Solution

The fourth proportional to 680,932.40, 1,021,981.80 and 302,435.60 is: 453,912.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    680,932.40 : 1,021,981.80 = 302,435.60 : x
  2. Step 2: Convert to fraction form
    680,932.40/1,021,981.80 = 302,435.60/x
  3. Step 3: Cross multiply
    680,932.40x = 1,021,981.80 × 302,435.60
  4. Step 4: Simplify right side
    680,932.40x = 309,083,678,872.08
  5. Step 5: Solve for x
    x = 309,083,678,872.08/680,932.40
  6. Step 6: Final answer
    x = 453,912.43

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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.