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Finding the Fourth Proportional to 1,436,627,278.89, 1,982,603,309.40 and 801,603,238.05

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Solution

The fourth proportional to 1,436,627,278.89, 1,982,603,309.40 and 801,603,238.05 is: 1,106,244,643.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,436,627,278.89 : 1,982,603,309.40 = 801,603,238.05 : x
  2. Step 2: Convert to fraction form
    1,436,627,278.89/1,982,603,309.40 = 801,603,238.05/x
  3. Step 3: Cross multiply
    1,436,627,278.89x = 1,982,603,309.40 × 801,603,238.05
  4. Step 4: Simplify right side
    1,436,627,278.89x = 1,589,261,232,583,685,888
  5. Step 5: Solve for x
    x = 1,589,261,232,583,685,888/1,436,627,278.89
  6. Step 6: Final answer
    x = 1,106,244,643.92

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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.