Home / 809,990.70-1,214,986.05-766,688.10

Finding the Fourth Proportional to 809,990.70, 1,214,986.05 and 766,688.10

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Solution

The fourth proportional to 809,990.70, 1,214,986.05 and 766,688.10 is: 1,150,032.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,990.70 : 1,214,986.05 = 766,688.10 : x
  2. Step 2: Convert to fraction form
    809,990.70/1,214,986.05 = 766,688.10/x
  3. Step 3: Cross multiply
    809,990.70x = 1,214,986.05 × 766,688.10
  4. Step 4: Simplify right side
    809,990.70x = 931,515,346,201.01
  5. Step 5: Solve for x
    x = 931,515,346,201.01/809,990.70
  6. Step 6: Final answer
    x = 1,150,032.15

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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.