Home / 658,719.75-909,021.45-372,233.69

Finding the Fourth Proportional to 658,719.75, 909,021.45 and 372,233.69

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Solution

The fourth proportional to 658,719.75, 909,021.45 and 372,233.69 is: 513,675.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,719.75 : 909,021.45 = 372,233.69 : x
  2. Step 2: Convert to fraction form
    658,719.75/909,021.45 = 372,233.69/x
  3. Step 3: Cross multiply
    658,719.75x = 909,021.45 × 372,233.69
  4. Step 4: Simplify right side
    658,719.75x = 338,368,404,077.54
  5. Step 5: Solve for x
    x = 338,368,404,077.54/658,719.75
  6. Step 6: Final answer
    x = 513,675.81

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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.