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Finding the Fourth Proportional to 570,027.48, 786,625.78 and 311,903.41

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Solution

The fourth proportional to 570,027.48, 786,625.78 and 311,903.41 is: 430,420.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,027.48 : 786,625.78 = 311,903.41 : x
  2. Step 2: Convert to fraction form
    570,027.48/786,625.78 = 311,903.41/x
  3. Step 3: Cross multiply
    570,027.48x = 786,625.78 × 311,903.41
  4. Step 4: Simplify right side
    570,027.48x = 245,351,262,489.33
  5. Step 5: Solve for x
    x = 245,351,262,489.33/570,027.48
  6. Step 6: Final answer
    x = 430,420.06

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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.