Home / 721,093,107.76-995,161,938.60-403,585,108.72

Finding the Fourth Proportional to 721,093,107.76, 995,161,938.60 and 403,585,108.72

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Solution

The fourth proportional to 721,093,107.76, 995,161,938.60 and 403,585,108.72 is: 556,977,365.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,093,107.76 : 995,161,938.60 = 403,585,108.72 : x
  2. Step 2: Convert to fraction form
    721,093,107.76/995,161,938.60 = 403,585,108.72/x
  3. Step 3: Cross multiply
    721,093,107.76x = 995,161,938.60 × 403,585,108.72
  4. Step 4: Simplify right side
    721,093,107.76x = 401,632,539,183,886,976
  5. Step 5: Solve for x
    x = 401,632,539,183,886,976/721,093,107.76
  6. Step 6: Final answer
    x = 556,977,365.14

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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.