Home / 421,579,410.48-632,585,293.40-203,415,808.56

Finding the Fourth Proportional to 421,579,410.48, 632,585,293.40 and 203,415,808.56

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Solution

The fourth proportional to 421,579,410.48, 632,585,293.40 and 203,415,808.56 is: 305,228,020.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,579,410.48 : 632,585,293.40 = 203,415,808.56 : x
  2. Step 2: Convert to fraction form
    421,579,410.48/632,585,293.40 = 203,415,808.56/x
  3. Step 3: Cross multiply
    421,579,410.48x = 632,585,293.40 × 203,415,808.56
  4. Step 4: Simplify right side
    421,579,410.48x = 128,677,848,940,125,824
  5. Step 5: Solve for x
    x = 128,677,848,940,125,824/421,579,410.48
  6. Step 6: Final answer
    x = 305,228,020.49

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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.