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Finding the Fourth Proportional to 570,912.44, 786,940.94 and 387,091.48

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Solution

The fourth proportional to 570,912.44, 786,940.94 and 387,091.48 is: 533,563.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,912.44 : 786,940.94 = 387,091.48 : x
  2. Step 2: Convert to fraction form
    570,912.44/786,940.94 = 387,091.48/x
  3. Step 3: Cross multiply
    570,912.44x = 786,940.94 × 387,091.48
  4. Step 4: Simplify right side
    570,912.44x = 304,618,133,137.19
  5. Step 5: Solve for x
    x = 304,618,133,137.19/570,912.44
  6. Step 6: Final answer
    x = 533,563.66

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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.