Home / 1,431,230.80-2,146,846.20-722,642.80

Finding the Fourth Proportional to 1,431,230.80, 2,146,846.20 and 722,642.80

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Solution

The fourth proportional to 1,431,230.80, 2,146,846.20 and 722,642.80 is: 1,083,964.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,431,230.80 : 2,146,846.20 = 722,642.80 : x
  2. Step 2: Convert to fraction form
    1,431,230.80/2,146,846.20 = 722,642.80/x
  3. Step 3: Cross multiply
    1,431,230.80x = 2,146,846.20 × 722,642.80
  4. Step 4: Simplify right side
    1,431,230.80x = 1,551,402,949,137.36
  5. Step 5: Solve for x
    x = 1,551,402,949,137.36/1,431,230.80
  6. Step 6: Final answer
    x = 1,083,964.20

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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.