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Finding the Fourth Proportional to 682,869, 942,381.52 and 372,788.12

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Solution

The fourth proportional to 682,869, 942,381.52 and 372,788.12 is: 514,459.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    682,869 : 942,381.52 = 372,788.12 : x
  2. Step 2: Convert to fraction form
    682,869/942,381.52 = 372,788.12/x
  3. Step 3: Cross multiply
    682,869x = 942,381.52 × 372,788.12
  4. Step 4: Simplify right side
    682,869x = 351,308,630,451.64
  5. Step 5: Solve for x
    x = 351,308,630,451.64/682,869
  6. Step 6: Final answer
    x = 514,459.77

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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.