Home / 926,912.40-1,389,202.20-821,936.40

Finding the Fourth Proportional to 926,912.40, 1,389,202.20 and 821,936.40

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Solution

The fourth proportional to 926,912.40, 1,389,202.20 and 821,936.40 is: 1,231,870.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    926,912.40 : 1,389,202.20 = 821,936.40 : x
  2. Step 2: Convert to fraction form
    926,912.40/1,389,202.20 = 821,936.40/x
  3. Step 3: Cross multiply
    926,912.40x = 1,389,202.20 × 821,936.40
  4. Step 4: Simplify right side
    926,912.40x = 1,141,835,855,140.08
  5. Step 5: Solve for x
    x = 1,141,835,855,140.08/926,912.40
  6. Step 6: Final answer
    x = 1,231,870.30

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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.