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Finding the Fourth Proportional to 682,435.63, 941,761.17 and 380,629.63

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Solution

The fourth proportional to 682,435.63, 941,761.17 and 380,629.63 is: 525,268.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,435.63 : 941,761.17 = 380,629.63 : x
  2. Step 2: Convert to fraction form
    682,435.63/941,761.17 = 380,629.63/x
  3. Step 3: Cross multiply
    682,435.63x = 941,761.17 × 380,629.63
  4. Step 4: Simplify right side
    682,435.63x = 358,462,199,073.51
  5. Step 5: Solve for x
    x = 358,462,199,073.51/682,435.63
  6. Step 6: Final answer
    x = 525,268.88

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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.