Home / 830,495.20-1,245,742.80-789,023.20

Finding the Fourth Proportional to 830,495.20, 1,245,742.80 and 789,023.20

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Solution

The fourth proportional to 830,495.20, 1,245,742.80 and 789,023.20 is: 1,183,534.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,495.20 : 1,245,742.80 = 789,023.20 : x
  2. Step 2: Convert to fraction form
    830,495.20/1,245,742.80 = 789,023.20/x
  3. Step 3: Cross multiply
    830,495.20x = 1,245,742.80 × 789,023.20
  4. Step 4: Simplify right side
    830,495.20x = 982,919,970,432.96
  5. Step 5: Solve for x
    x = 982,919,970,432.96/830,495.20
  6. Step 6: Final answer
    x = 1,183,534.80

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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.