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Finding the Fourth Proportional to 8,400,954.15, 12,601,431.23 and 8,400,954.15

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Solution

The fourth proportional to 8,400,954.15, 12,601,431.23 and 8,400,954.15 is: 12,601,431.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,400,954.15 : 12,601,431.23 = 8,400,954.15 : x
  2. Step 2: Convert to fraction form
    8,400,954.15/12,601,431.23 = 8,400,954.15/x
  3. Step 3: Cross multiply
    8,400,954.15x = 12,601,431.23 × 8,400,954.15
  4. Step 4: Simplify right side
    8,400,954.15x = 105,864,045,945,603.33
  5. Step 5: Solve for x
    x = 105,864,045,945,603.33/8,400,954.15
  6. Step 6: Final answer
    x = 12,601,431.23

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Double scale
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Similar ratio
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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.