Home / 851,284.80-1,276,927.20-809,812.80

Finding the Fourth Proportional to 851,284.80, 1,276,927.20 and 809,812.80

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Solution

The fourth proportional to 851,284.80, 1,276,927.20 and 809,812.80 is: 1,214,719.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    851,284.80 : 1,276,927.20 = 809,812.80 : x
  2. Step 2: Convert to fraction form
    851,284.80/1,276,927.20 = 809,812.80/x
  3. Step 3: Cross multiply
    851,284.80x = 1,276,927.20 × 809,812.80
  4. Step 4: Simplify right side
    851,284.80x = 1,034,071,991,228.16
  5. Step 5: Solve for x
    x = 1,034,071,991,228.16/851,284.80
  6. Step 6: Final answer
    x = 1,214,719.20

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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.