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Finding the Third Proportional to 12,280,887,831 and 18,864,946,138.50

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Solution

The third proportional to 12,280,887,831 and 18,864,946,138.50 is: 28,978,865,185.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,280,887,831 : 18,864,946,138.50 = 18,864,946,138.50 : x
  2. Step 2: Convert to fraction form
    12,280,887,831/18,864,946,138.50 = 18,864,946,138.50/x
  3. Step 3: Cross multiply
    12,280,887,831x = 18,864,946,138.50 × 18,864,946,138.50
  4. Step 4: Simplify right side
    12,280,887,831x = 355,886,192,808,506,032,128
  5. Step 5: Solve for x
    x = 355,886,192,808,506,032,128/12,280,887,831
  6. Step 6: Final answer
    x = 28,978,865,185.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.54) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.