Home / 839,640.80-1,259,461.20-806,981.60

Finding the Fourth Proportional to 839,640.80, 1,259,461.20 and 806,981.60

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Solution

The fourth proportional to 839,640.80, 1,259,461.20 and 806,981.60 is: 1,210,472.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,640.80 : 1,259,461.20 = 806,981.60 : x
  2. Step 2: Convert to fraction form
    839,640.80/1,259,461.20 = 806,981.60/x
  3. Step 3: Cross multiply
    839,640.80x = 1,259,461.20 × 806,981.60
  4. Step 4: Simplify right side
    839,640.80x = 1,016,362,014,313.92
  5. Step 5: Solve for x
    x = 1,016,362,014,313.92/839,640.80
  6. Step 6: Final answer
    x = 1,210,472.40

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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.