Home / 1,291,788,511.20-1,937,682,766.80-1,138,733,503.20

Finding the Fourth Proportional to 1,291,788,511.20, 1,937,682,766.80 and 1,138,733,503.20

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Solution

The fourth proportional to 1,291,788,511.20, 1,937,682,766.80 and 1,138,733,503.20 is: 1,708,100,254.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,291,788,511.20 : 1,937,682,766.80 = 1,138,733,503.20 : x
  2. Step 2: Convert to fraction form
    1,291,788,511.20/1,937,682,766.80 = 1,138,733,503.20/x
  3. Step 3: Cross multiply
    1,291,788,511.20x = 1,937,682,766.80 × 1,138,733,503.20
  4. Step 4: Simplify right side
    1,291,788,511.20x = 2,206,504,285,128,432,640
  5. Step 5: Solve for x
    x = 2,206,504,285,128,432,640/1,291,788,511.20
  6. Step 6: Final answer
    x = 1,708,100,254.80

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Double scale
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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.