Home / 1,286,262,938.14-1,775,043,729.43-721,669,879.26

Finding the Fourth Proportional to 1,286,262,938.14, 1,775,043,729.43 and 721,669,879.26

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Solution

The fourth proportional to 1,286,262,938.14, 1,775,043,729.43 and 721,669,879.26 is: 995,904,924.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,286,262,938.14 : 1,775,043,729.43 = 721,669,879.26 : x
  2. Step 2: Convert to fraction form
    1,286,262,938.14/1,775,043,729.43 = 721,669,879.26/x
  3. Step 3: Cross multiply
    1,286,262,938.14x = 1,775,043,729.43 × 721,669,879.26
  4. Step 4: Simplify right side
    1,286,262,938.14x = 1,280,995,593,898,968,320
  5. Step 5: Solve for x
    x = 1,280,995,593,898,968,320/1,286,262,938.14
  6. Step 6: Final answer
    x = 995,904,924.19

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Double scale
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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.