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Finding the Fourth Proportional to 12,456,768.45, 18,685,152.68 and 12,456,768.45

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Solution

The fourth proportional to 12,456,768.45, 18,685,152.68 and 12,456,768.45 is: 18,685,152.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,456,768.45 : 18,685,152.68 = 12,456,768.45 : x
  2. Step 2: Convert to fraction form
    12,456,768.45/18,685,152.68 = 12,456,768.45/x
  3. Step 3: Cross multiply
    12,456,768.45x = 18,685,152.68 × 12,456,768.45
  4. Step 4: Simplify right side
    12,456,768.45x = 232,756,620,325,373.09
  5. Step 5: Solve for x
    x = 232,756,620,325,373.09/12,456,768.45
  6. Step 6: Final answer
    x = 18,685,152.68

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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.