Home / 666,505,738.12-919,707,896.82-369,140,190.28

Finding the Fourth Proportional to 666,505,738.12, 919,707,896.82 and 369,140,190.28

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Solution

The fourth proportional to 666,505,738.12, 919,707,896.82 and 369,140,190.28 is: 509,374,681.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,505,738.12 : 919,707,896.82 = 369,140,190.28 : x
  2. Step 2: Convert to fraction form
    666,505,738.12/919,707,896.82 = 369,140,190.28/x
  3. Step 3: Cross multiply
    666,505,738.12x = 919,707,896.82 × 369,140,190.28
  4. Step 4: Simplify right side
    666,505,738.12x = 339,501,148,034,153,408
  5. Step 5: Solve for x
    x = 339,501,148,034,153,408/666,505,738.12
  6. Step 6: Final answer
    x = 509,374,681.44

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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.