Home / 398,573,890.20-597,955,313.70-204,515,256.60

Finding the Fourth Proportional to 398,573,890.20, 597,955,313.70 and 204,515,256.60

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Solution

The fourth proportional to 398,573,890.20, 597,955,313.70 and 204,515,256.60 is: 306,821,363.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,573,890.20 : 597,955,313.70 = 204,515,256.60 : x
  2. Step 2: Convert to fraction form
    398,573,890.20/597,955,313.70 = 204,515,256.60/x
  3. Step 3: Cross multiply
    398,573,890.20x = 597,955,313.70 × 204,515,256.60
  4. Step 4: Simplify right side
    398,573,890.20x = 122,290,984,416,689,008
  5. Step 5: Solve for x
    x = 122,290,984,416,689,008/398,573,890.20
  6. Step 6: Final answer
    x = 306,821,363.42

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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.