Home / 808,970,812.70-1,213,456,219.05-800,908,655.90

Finding the Fourth Proportional to 808,970,812.70, 1,213,456,219.05 and 800,908,655.90

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Solution

The fourth proportional to 808,970,812.70, 1,213,456,219.05 and 800,908,655.90 is: 1,201,362,983.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    808,970,812.70 : 1,213,456,219.05 = 800,908,655.90 : x
  2. Step 2: Convert to fraction form
    808,970,812.70/1,213,456,219.05 = 800,908,655.90/x
  3. Step 3: Cross multiply
    808,970,812.70x = 1,213,456,219.05 × 800,908,655.90
  4. Step 4: Simplify right side
    808,970,812.70x = 971,867,589,392,831,360
  5. Step 5: Solve for x
    x = 971,867,589,392,831,360/808,970,812.70
  6. Step 6: Final answer
    x = 1,201,362,983.85

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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.