Home / 1,045,690.80-1,570,091.40-809,300.40

Finding the Fourth Proportional to 1,045,690.80, 1,570,091.40 and 809,300.40

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Solution

The fourth proportional to 1,045,690.80, 1,570,091.40 and 809,300.40 is: 1,215,154.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,045,690.80 : 1,570,091.40 = 809,300.40 : x
  2. Step 2: Convert to fraction form
    1,045,690.80/1,570,091.40 = 809,300.40/x
  3. Step 3: Cross multiply
    1,045,690.80x = 1,570,091.40 × 809,300.40
  4. Step 4: Simplify right side
    1,045,690.80x = 1,270,675,598,056.56
  5. Step 5: Solve for x
    x = 1,270,675,598,056.56/1,045,690.80
  6. Step 6: Final answer
    x = 1,215,154.23

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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.