Home / 3,918,245,184.75-5,407,178,420.57-2,158,112,592.75

Finding the Fourth Proportional to 3,918,245,184.75, 5,407,178,420.57 and 2,158,112,592.75

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Solution

The fourth proportional to 3,918,245,184.75, 5,407,178,420.57 and 2,158,112,592.75 is: 2,978,195,414.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,918,245,184.75 : 5,407,178,420.57 = 2,158,112,592.75 : x
  2. Step 2: Convert to fraction form
    3,918,245,184.75/5,407,178,420.57 = 2,158,112,592.75/x
  3. Step 3: Cross multiply
    3,918,245,184.75x = 5,407,178,420.57 × 2,158,112,592.75
  4. Step 4: Simplify right side
    3,918,245,184.75x = 11,669,299,840,667,381,760
  5. Step 5: Solve for x
    x = 11,669,299,840,667,381,760/3,918,245,184.75
  6. Step 6: Final answer
    x = 2,978,195,414.13

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Double scale
Find fourth proportional to 3,918,245,185.75, 5,407,178,421.95 and 2,158,112,593.75
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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.