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Finding the Fourth Proportional to 682,765.98, 942,216.44 and 380,959.98

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Solution

The fourth proportional to 682,765.98, 942,216.44 and 380,959.98 is: 525,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,765.98 : 942,216.44 = 380,959.98 : x
  2. Step 2: Convert to fraction form
    682,765.98/942,216.44 = 380,959.98/x
  3. Step 3: Cross multiply
    682,765.98x = 942,216.44 × 380,959.98
  4. Step 4: Simplify right side
    682,765.98x = 358,946,756,138.07
  5. Step 5: Solve for x
    x = 358,946,756,138.07/682,765.98
  6. Step 6: Final answer
    x = 525,724.43

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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.