Home / 804,815,999.70-1,207,223,999.55-259,612,646.10

Finding the Fourth Proportional to 804,815,999.70, 1,207,223,999.55 and 259,612,646.10

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Solution

The fourth proportional to 804,815,999.70, 1,207,223,999.55 and 259,612,646.10 is: 389,418,969.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,815,999.70 : 1,207,223,999.55 = 259,612,646.10 : x
  2. Step 2: Convert to fraction form
    804,815,999.70/1,207,223,999.55 = 259,612,646.10/x
  3. Step 3: Cross multiply
    804,815,999.70x = 1,207,223,999.55 × 259,612,646.10
  4. Step 4: Simplify right side
    804,815,999.70x = 313,410,616,958,600,704
  5. Step 5: Solve for x
    x = 313,410,616,958,600,704/804,815,999.70
  6. Step 6: Final answer
    x = 389,418,969.15

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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.