Home / 642,391.55-962,536.07-388,903.73

Finding the Fourth Proportional to 642,391.55, 962,536.07 and 388,903.73

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Solution

The fourth proportional to 642,391.55, 962,536.07 and 388,903.73 is: 582,719.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,391.55 : 962,536.07 = 388,903.73 : x
  2. Step 2: Convert to fraction form
    642,391.55/962,536.07 = 388,903.73/x
  3. Step 3: Cross multiply
    642,391.55x = 962,536.07 × 388,903.73
  4. Step 4: Simplify right side
    642,391.55x = 374,333,871,261.14
  5. Step 5: Solve for x
    x = 374,333,871,261.14/642,391.55
  6. Step 6: Final answer
    x = 582,719.18

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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.