Home / 1,992,906,643.20-2,989,359,964.80-612,541,789.80

Finding the Fourth Proportional to 1,992,906,643.20, 2,989,359,964.80 and 612,541,789.80

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Solution

The fourth proportional to 1,992,906,643.20, 2,989,359,964.80 and 612,541,789.80 is: 918,812,684.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,992,906,643.20 : 2,989,359,964.80 = 612,541,789.80 : x
  2. Step 2: Convert to fraction form
    1,992,906,643.20/2,989,359,964.80 = 612,541,789.80/x
  3. Step 3: Cross multiply
    1,992,906,643.20x = 2,989,359,964.80 × 612,541,789.80
  4. Step 4: Simplify right side
    1,992,906,643.20x = 1,831,107,903,195,056,896
  5. Step 5: Solve for x
    x = 1,831,107,903,195,056,896/1,992,906,643.20
  6. Step 6: Final answer
    x = 918,812,684.70

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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.