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Finding the Fourth Proportional to 509,586.63, 764,471.88 and 209,903.64

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Solution

The fourth proportional to 509,586.63, 764,471.88 and 209,903.64 is: 314,893.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    509,586.63 : 764,471.88 = 209,903.64 : x
  2. Step 2: Convert to fraction form
    509,586.63/764,471.88 = 209,903.64/x
  3. Step 3: Cross multiply
    509,586.63x = 764,471.88 × 209,903.64
  4. Step 4: Simplify right side
    509,586.63x = 160,465,430,289.64
  5. Step 5: Solve for x
    x = 160,465,430,289.64/509,586.63
  6. Step 6: Final answer
    x = 314,893.33

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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.