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Finding the Fourth Proportional to 682,920.90, 942,425.67 and 376,997.40

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Solution

The fourth proportional to 682,920.90, 942,425.67 and 376,997.40 is: 520,253.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,920.90 : 942,425.67 = 376,997.40 : x
  2. Step 2: Convert to fraction form
    682,920.90/942,425.67 = 376,997.40/x
  3. Step 3: Cross multiply
    682,920.90x = 942,425.67 × 376,997.40
  4. Step 4: Simplify right side
    682,920.90x = 355,292,027,283.26
  5. Step 5: Solve for x
    x = 355,292,027,283.26/682,920.90
  6. Step 6: Final answer
    x = 520,253.56

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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.