Home / 449,632.06-620,781.51-288,556.54

Finding the Fourth Proportional to 449,632.06, 620,781.51 and 288,556.54

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Solution

The fourth proportional to 449,632.06, 620,781.51 and 288,556.54 is: 398,393.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,632.06 : 620,781.51 = 288,556.54 : x
  2. Step 2: Convert to fraction form
    449,632.06/620,781.51 = 288,556.54/x
  3. Step 3: Cross multiply
    449,632.06x = 620,781.51 × 288,556.54
  4. Step 4: Simplify right side
    449,632.06x = 179,130,564,621.58
  5. Step 5: Solve for x
    x = 179,130,564,621.58/449,632.06
  6. Step 6: Final answer
    x = 398,393.67

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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.