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Finding the Fourth Proportional to 830,615.80, 1,245,923.70 and 822,742.60

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Solution

The fourth proportional to 830,615.80, 1,245,923.70 and 822,742.60 is: 1,234,113.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,615.80 : 1,245,923.70 = 822,742.60 : x
  2. Step 2: Convert to fraction form
    830,615.80/1,245,923.70 = 822,742.60/x
  3. Step 3: Cross multiply
    830,615.80x = 1,245,923.70 × 822,742.60
  4. Step 4: Simplify right side
    830,615.80x = 1,025,074,504,339.62
  5. Step 5: Solve for x
    x = 1,025,074,504,339.62/830,615.80
  6. Step 6: Final answer
    x = 1,234,113.90

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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.