Home / 1,278,599,519.79-1,917,953,090.82-405,235,350.90

Finding the Fourth Proportional to 1,278,599,519.79, 1,917,953,090.82 and 405,235,350.90

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Solution

The fourth proportional to 1,278,599,519.79, 1,917,953,090.82 and 405,235,350.90 is: 607,870,081.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,278,599,519.79 : 1,917,953,090.82 = 405,235,350.90 : x
  2. Step 2: Convert to fraction form
    1,278,599,519.79/1,917,953,090.82 = 405,235,350.90/x
  3. Step 3: Cross multiply
    1,278,599,519.79x = 1,917,953,090.82 × 405,235,350.90
  4. Step 4: Simplify right side
    1,278,599,519.79x = 777,222,393,768,182,144
  5. Step 5: Solve for x
    x = 777,222,393,768,182,144/1,278,599,519.79
  6. Step 6: Final answer
    x = 607,870,081.08

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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.