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Finding the Fourth Proportional to 860,321.80, 1,290,482.70 and 827,662.60

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Solution

The fourth proportional to 860,321.80, 1,290,482.70 and 827,662.60 is: 1,241,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    860,321.80 : 1,290,482.70 = 827,662.60 : x
  2. Step 2: Convert to fraction form
    860,321.80/1,290,482.70 = 827,662.60/x
  3. Step 3: Cross multiply
    860,321.80x = 1,290,482.70 × 827,662.60
  4. Step 4: Simplify right side
    860,321.80x = 1,068,084,266,737.02
  5. Step 5: Solve for x
    x = 1,068,084,266,737.02/860,321.80
  6. Step 6: Final answer
    x = 1,241,493.90

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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.