Home / 858,983.20-1,288,474.80-809,994.40

Finding the Fourth Proportional to 858,983.20, 1,288,474.80 and 809,994.40

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Solution

The fourth proportional to 858,983.20, 1,288,474.80 and 809,994.40 is: 1,214,991.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    858,983.20 : 1,288,474.80 = 809,994.40 : x
  2. Step 2: Convert to fraction form
    858,983.20/1,288,474.80 = 809,994.40/x
  3. Step 3: Cross multiply
    858,983.20x = 1,288,474.80 × 809,994.40
  4. Step 4: Simplify right side
    858,983.20x = 1,043,657,372,541.12
  5. Step 5: Solve for x
    x = 1,043,657,372,541.12/858,983.20
  6. Step 6: Final answer
    x = 1,214,991.60

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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.