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Finding the Fourth Proportional to 682,418.48, 941,737.60 and 380,612.48

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Solution

The fourth proportional to 682,418.48, 941,737.60 and 380,612.48 is: 525,245.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,418.48 : 941,737.60 = 380,612.48 : x
  2. Step 2: Convert to fraction form
    682,418.48/941,737.60 = 380,612.48/x
  3. Step 3: Cross multiply
    682,418.48x = 941,737.60 × 380,612.48
  4. Step 4: Simplify right side
    682,418.48x = 358,437,083,445.25
  5. Step 5: Solve for x
    x = 358,437,083,445.25/682,418.48
  6. Step 6: Final answer
    x = 525,245.28

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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.