Home / 820,245.12-1,232,116.32-772,305.60

Finding the Fourth Proportional to 820,245.12, 1,232,116.32 and 772,305.60

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Solution

The fourth proportional to 820,245.12, 1,232,116.32 and 772,305.60 is: 1,160,104.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,245.12 : 1,232,116.32 = 772,305.60 : x
  2. Step 2: Convert to fraction form
    820,245.12/1,232,116.32 = 772,305.60/x
  3. Step 3: Cross multiply
    820,245.12x = 1,232,116.32 × 772,305.60
  4. Step 4: Simplify right side
    820,245.12x = 951,570,333,787.39
  5. Step 5: Solve for x
    x = 951,570,333,787.39/820,245.12
  6. Step 6: Final answer
    x = 1,160,104.84

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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.