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Finding the Fourth Proportional to 20,308,208,085.80, 30,404,981,235.90 and 20,308,208,085.80

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Solution

The fourth proportional to 20,308,208,085.80, 30,404,981,235.90 and 20,308,208,085.80 is: 30,404,981,235.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,308,208,085.80 : 30,404,981,235.90 = 20,308,208,085.80 : x
  2. Step 2: Convert to fraction form
    20,308,208,085.80/30,404,981,235.90 = 20,308,208,085.80/x
  3. Step 3: Cross multiply
    20,308,208,085.80x = 30,404,981,235.90 × 20,308,208,085.80
  4. Step 4: Simplify right side
    20,308,208,085.80x = 617,470,685,783,501,701,120
  5. Step 5: Solve for x
    x = 617,470,685,783,501,701,120/20,308,208,085.80
  6. Step 6: Final answer
    x = 30,404,981,235.90

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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.