Home / 1,379,659,627.20-2,069,489,440.80-1,298,030,289.60

Finding the Fourth Proportional to 1,379,659,627.20, 2,069,489,440.80 and 1,298,030,289.60

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Solution

The fourth proportional to 1,379,659,627.20, 2,069,489,440.80 and 1,298,030,289.60 is: 1,947,045,434.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,379,659,627.20 : 2,069,489,440.80 = 1,298,030,289.60 : x
  2. Step 2: Convert to fraction form
    1,379,659,627.20/2,069,489,440.80 = 1,298,030,289.60/x
  3. Step 3: Cross multiply
    1,379,659,627.20x = 2,069,489,440.80 × 1,298,030,289.60
  4. Step 4: Simplify right side
    1,379,659,627.20x = 2,686,259,978,165,765,632
  5. Step 5: Solve for x
    x = 2,686,259,978,165,765,632/1,379,659,627.20
  6. Step 6: Final answer
    x = 1,947,045,434.40

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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.