Home / 3,899,887,533.18-5,381,855,227.38-2,115,740,986.20

Finding the Fourth Proportional to 3,899,887,533.18, 5,381,855,227.38 and 2,115,740,986.20

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Solution

The fourth proportional to 3,899,887,533.18, 5,381,855,227.38 and 2,115,740,986.20 is: 2,919,728,220.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,899,887,533.18 : 5,381,855,227.38 = 2,115,740,986.20 : x
  2. Step 2: Convert to fraction form
    3,899,887,533.18/5,381,855,227.38 = 2,115,740,986.20/x
  3. Step 3: Cross multiply
    3,899,887,533.18x = 5,381,855,227.38 × 2,115,740,986.20
  4. Step 4: Simplify right side
    3,899,887,533.18x = 11,386,611,686,362,587,136
  5. Step 5: Solve for x
    x = 11,386,611,686,362,587,136/3,899,887,533.18
  6. Step 6: Final answer
    x = 2,919,728,220.23

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.