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Finding the Fourth Proportional to 570,912.68, 787,860.11 and 309,268.60

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Solution

The fourth proportional to 570,912.68, 787,860.11 and 309,268.60 is: 426,791.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,912.68 : 787,860.11 = 309,268.60 : x
  2. Step 2: Convert to fraction form
    570,912.68/787,860.11 = 309,268.60/x
  3. Step 3: Cross multiply
    570,912.68x = 787,860.11 × 309,268.60
  4. Step 4: Simplify right side
    570,912.68x = 243,660,392,019.07
  5. Step 5: Solve for x
    x = 243,660,392,019.07/570,912.68
  6. Step 6: Final answer
    x = 426,791.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.