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Finding the Fourth Proportional to 20,270,663,619.80, 30,405,995,429.70 and 20,270,663,619.80

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Solution

The fourth proportional to 20,270,663,619.80, 30,405,995,429.70 and 20,270,663,619.80 is: 30,405,995,429.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,270,663,619.80 : 30,405,995,429.70 = 20,270,663,619.80 : x
  2. Step 2: Convert to fraction form
    20,270,663,619.80/30,405,995,429.70 = 20,270,663,619.80/x
  3. Step 3: Cross multiply
    20,270,663,619.80x = 30,405,995,429.70 × 20,270,663,619.80
  4. Step 4: Simplify right side
    20,270,663,619.80x = 616,349,705,380,624,859,136
  5. Step 5: Solve for x
    x = 616,349,705,380,624,859,136/20,270,663,619.80
  6. Step 6: Final answer
    x = 30,405,995,429.70

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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.