Home / 1,212,678,857.25-1,819,830,816.45-425,734,846.29

Finding the Fourth Proportional to 1,212,678,857.25, 1,819,830,816.45 and 425,734,846.29

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Solution

The fourth proportional to 1,212,678,857.25, 1,819,830,816.45 and 425,734,846.29 is: 638,887,524.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,212,678,857.25 : 1,819,830,816.45 = 425,734,846.29 : x
  2. Step 2: Convert to fraction form
    1,212,678,857.25/1,819,830,816.45 = 425,734,846.29/x
  3. Step 3: Cross multiply
    1,212,678,857.25x = 1,819,830,816.45 × 425,734,846.29
  4. Step 4: Simplify right side
    1,212,678,857.25x = 774,765,392,915,145,984
  5. Step 5: Solve for x
    x = 774,765,392,915,145,984/1,212,678,857.25
  6. Step 6: Final answer
    x = 638,887,524.33

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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.