Home / 407,851.12-562,906.70-305,001.37

Finding the Fourth Proportional to 407,851.12, 562,906.70 and 305,001.37

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Solution

The fourth proportional to 407,851.12, 562,906.70 and 305,001.37 is: 420,955.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,851.12 : 562,906.70 = 305,001.37 : x
  2. Step 2: Convert to fraction form
    407,851.12/562,906.70 = 305,001.37/x
  3. Step 3: Cross multiply
    407,851.12x = 562,906.70 × 305,001.37
  4. Step 4: Simplify right side
    407,851.12x = 171,687,314,682.18
  5. Step 5: Solve for x
    x = 171,687,314,682.18/407,851.12
  6. Step 6: Final answer
    x = 420,955.85

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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.