Home / 1,291,247,993.80-1,936,871,990.70-1,191,478,803.40

Finding the Fourth Proportional to 1,291,247,993.80, 1,936,871,990.70 and 1,191,478,803.40

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Solution

The fourth proportional to 1,291,247,993.80, 1,936,871,990.70 and 1,191,478,803.40 is: 1,787,218,205.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,247,993.80 : 1,936,871,990.70 = 1,191,478,803.40 : x
  2. Step 2: Convert to fraction form
    1,291,247,993.80/1,936,871,990.70 = 1,191,478,803.40/x
  3. Step 3: Cross multiply
    1,291,247,993.80x = 1,936,871,990.70 × 1,191,478,803.40
  4. Step 4: Simplify right side
    1,291,247,993.80x = 2,307,741,921,818,212,352
  5. Step 5: Solve for x
    x = 2,307,741,921,818,212,352/1,291,247,993.80
  6. Step 6: Final answer
    x = 1,787,218,205.10

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Double scale
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Similar ratio
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1.5x scale

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.