Home / 1,210,279.80-1,819,356.30-857,735.40

Finding the Fourth Proportional to 1,210,279.80, 1,819,356.30 and 857,735.40

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Solution

The fourth proportional to 1,210,279.80, 1,819,356.30 and 857,735.40 is: 1,289,393.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,279.80 : 1,819,356.30 = 857,735.40 : x
  2. Step 2: Convert to fraction form
    1,210,279.80/1,819,356.30 = 857,735.40/x
  3. Step 3: Cross multiply
    1,210,279.80x = 1,819,356.30 × 857,735.40
  4. Step 4: Simplify right side
    1,210,279.80x = 1,560,526,303,723.02
  5. Step 5: Solve for x
    x = 1,560,526,303,723.02/1,210,279.80
  6. Step 6: Final answer
    x = 1,289,393.00

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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.