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Finding the Fourth Proportional to 591,371.60, 816,093.13 and 319,439.49

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Solution

The fourth proportional to 591,371.60, 816,093.13 and 319,439.49 is: 440,826.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    591,371.60 : 816,093.13 = 319,439.49 : x
  2. Step 2: Convert to fraction form
    591,371.60/816,093.13 = 319,439.49/x
  3. Step 3: Cross multiply
    591,371.60x = 816,093.13 × 319,439.49
  4. Step 4: Simplify right side
    591,371.60x = 260,692,373,239.70
  5. Step 5: Solve for x
    x = 260,692,373,239.70/591,371.60
  6. Step 6: Final answer
    x = 440,826.67

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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.