Home / 806,741.80-1,210,112.70-770,000.20

Finding the Fourth Proportional to 806,741.80, 1,210,112.70 and 770,000.20

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Solution

The fourth proportional to 806,741.80, 1,210,112.70 and 770,000.20 is: 1,155,000.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    806,741.80 : 1,210,112.70 = 770,000.20 : x
  2. Step 2: Convert to fraction form
    806,741.80/1,210,112.70 = 770,000.20/x
  3. Step 3: Cross multiply
    806,741.80x = 1,210,112.70 × 770,000.20
  4. Step 4: Simplify right side
    806,741.80x = 931,787,021,022.54
  5. Step 5: Solve for x
    x = 931,787,021,022.54/806,741.80
  6. Step 6: Final answer
    x = 1,155,000.30

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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.