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Finding the Fourth Proportional to 655,339.20, 982,231.20 and 339,633.60

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Solution

The fourth proportional to 655,339.20, 982,231.20 and 339,633.60 is: 509,047.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,339.20 : 982,231.20 = 339,633.60 : x
  2. Step 2: Convert to fraction form
    655,339.20/982,231.20 = 339,633.60/x
  3. Step 3: Cross multiply
    655,339.20x = 982,231.20 × 339,633.60
  4. Step 4: Simplify right side
    655,339.20x = 333,598,718,488.32
  5. Step 5: Solve for x
    x = 333,598,718,488.32/655,339.20
  6. Step 6: Final answer
    x = 509,047.40

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1.5x scale

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.