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Finding the Fourth Proportional to 682,668, 942,127.20 and 380,868.48

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Solution

The fourth proportional to 682,668, 942,127.20 and 380,868.48 is: 525,623.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,668 : 942,127.20 = 380,868.48 : x
  2. Step 2: Convert to fraction form
    682,668/942,127.20 = 380,868.48/x
  3. Step 3: Cross multiply
    682,668x = 942,127.20 × 380,868.48
  4. Step 4: Simplify right side
    682,668x = 358,826,554,630.66
  5. Step 5: Solve for x
    x = 358,826,554,630.66/682,668
  6. Step 6: Final answer
    x = 525,623.81

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1.5x scale

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.