Home / 820,234.02-1,230,343.65-259,268.70

Finding the Fourth Proportional to 820,234.02, 1,230,343.65 and 259,268.70

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Solution

The fourth proportional to 820,234.02, 1,230,343.65 and 259,268.70 is: 388,900.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,234.02 : 1,230,343.65 = 259,268.70 : x
  2. Step 2: Convert to fraction form
    820,234.02/1,230,343.65 = 259,268.70/x
  3. Step 3: Cross multiply
    820,234.02x = 1,230,343.65 × 259,268.70
  4. Step 4: Simplify right side
    820,234.02x = 318,989,598,688.76
  5. Step 5: Solve for x
    x = 318,989,598,688.76/820,234.02
  6. Step 6: Final answer
    x = 388,900.72

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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.