Home / 853,076.88-1,278,705.96-642,062.16

Finding the Fourth Proportional to 853,076.88, 1,278,705.96 and 642,062.16

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Solution

The fourth proportional to 853,076.88, 1,278,705.96 and 642,062.16 is: 962,408.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    853,076.88 : 1,278,705.96 = 642,062.16 : x
  2. Step 2: Convert to fraction form
    853,076.88/1,278,705.96 = 642,062.16/x
  3. Step 3: Cross multiply
    853,076.88x = 1,278,705.96 × 642,062.16
  4. Step 4: Simplify right side
    853,076.88x = 821,008,710,682.47
  5. Step 5: Solve for x
    x = 821,008,710,682.47/853,076.88
  6. Step 6: Final answer
    x = 962,408.82

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.