Home / 8,085,477.70-12,128,216.55-5,215,696.30

Finding the Fourth Proportional to 8,085,477.70, 12,128,216.55 and 5,215,696.30

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Solution

The fourth proportional to 8,085,477.70, 12,128,216.55 and 5,215,696.30 is: 7,823,544.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,085,477.70 : 12,128,216.55 = 5,215,696.30 : x
  2. Step 2: Convert to fraction form
    8,085,477.70/12,128,216.55 = 5,215,696.30/x
  3. Step 3: Cross multiply
    8,085,477.70x = 12,128,216.55 × 5,215,696.30
  4. Step 4: Simplify right side
    8,085,477.70x = 63,257,094,185,433.77
  5. Step 5: Solve for x
    x = 63,257,094,185,433.77/8,085,477.70
  6. Step 6: Final answer
    x = 7,823,544.45

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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.