Home / 871,231.75-1,307,182.66-421,918.07

Finding the Fourth Proportional to 871,231.75, 1,307,182.66 and 421,918.07

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Solution

The fourth proportional to 871,231.75, 1,307,182.66 and 421,918.07 is: 633,039.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    871,231.75 : 1,307,182.66 = 421,918.07 : x
  2. Step 2: Convert to fraction form
    871,231.75/1,307,182.66 = 421,918.07/x
  3. Step 3: Cross multiply
    871,231.75x = 1,307,182.66 × 421,918.07
  4. Step 4: Simplify right side
    871,231.75x = 551,523,977,453.96
  5. Step 5: Solve for x
    x = 551,523,977,453.96/871,231.75
  6. Step 6: Final answer
    x = 633,039.35

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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.