Home / 1,660,400,307.64-2,291,379,661.83-991,403,806.78

Finding the Fourth Proportional to 1,660,400,307.64, 2,291,379,661.83 and 991,403,806.78

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Solution

The fourth proportional to 1,660,400,307.64, 2,291,379,661.83 and 991,403,806.78 is: 1,368,153,516.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,660,400,307.64 : 2,291,379,661.83 = 991,403,806.78 : x
  2. Step 2: Convert to fraction form
    1,660,400,307.64/2,291,379,661.83 = 991,403,806.78/x
  3. Step 3: Cross multiply
    1,660,400,307.64x = 2,291,379,661.83 × 991,403,806.78
  4. Step 4: Simplify right side
    1,660,400,307.64x = 2,271,682,519,516,530,944
  5. Step 5: Solve for x
    x = 2,271,682,519,516,530,944/1,660,400,307.64
  6. Step 6: Final answer
    x = 1,368,153,516.39

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Double scale
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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.