Home / 1,291,939,790.40-1,937,909,685.60-1,200,106,785.60

Finding the Fourth Proportional to 1,291,939,790.40, 1,937,909,685.60 and 1,200,106,785.60

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Solution

The fourth proportional to 1,291,939,790.40, 1,937,909,685.60 and 1,200,106,785.60 is: 1,800,160,178.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,939,790.40 : 1,937,909,685.60 = 1,200,106,785.60 : x
  2. Step 2: Convert to fraction form
    1,291,939,790.40/1,937,909,685.60 = 1,200,106,785.60/x
  3. Step 3: Cross multiply
    1,291,939,790.40x = 1,937,909,685.60 × 1,200,106,785.60
  4. Step 4: Simplify right side
    1,291,939,790.40x = 2,325,698,563,568,522,240
  5. Step 5: Solve for x
    x = 2,325,698,563,568,522,240/1,291,939,790.40
  6. Step 6: Final answer
    x = 1,800,160,178.40

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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.