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Finding the Fourth Proportional to 20,472,783,238.15, 30,709,174,857.23 and 20,472,783,238.15

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Solution

The fourth proportional to 20,472,783,238.15, 30,709,174,857.23 and 20,472,783,238.15 is: 30,709,174,857.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,472,783,238.15 : 30,709,174,857.23 = 20,472,783,238.15 : x
  2. Step 2: Convert to fraction form
    20,472,783,238.15/30,709,174,857.23 = 20,472,783,238.15/x
  3. Step 3: Cross multiply
    20,472,783,238.15x = 30,709,174,857.23 × 20,472,783,238.15
  4. Step 4: Simplify right side
    20,472,783,238.15x = 628,702,280,274,515,853,312
  5. Step 5: Solve for x
    x = 628,702,280,274,515,853,312/20,472,783,238.15
  6. Step 6: Final answer
    x = 30,709,174,857.23

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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.