Home / 820,028.64-1,230,039.12-259,062.24

Finding the Fourth Proportional to 820,028.64, 1,230,039.12 and 259,062.24

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Solution

The fourth proportional to 820,028.64, 1,230,039.12 and 259,062.24 is: 388,592.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,028.64 : 1,230,039.12 = 259,062.24 : x
  2. Step 2: Convert to fraction form
    820,028.64/1,230,039.12 = 259,062.24/x
  3. Step 3: Cross multiply
    820,028.64x = 1,230,039.12 × 259,062.24
  4. Step 4: Simplify right side
    820,028.64x = 318,656,689,714.83
  5. Step 5: Solve for x
    x = 318,656,689,714.83/820,028.64
  6. Step 6: Final answer
    x = 388,592.15

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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.