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Finding the Fourth Proportional to 624,420.70, 936,354.03 and 287,379.70

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Solution

The fourth proportional to 624,420.70, 936,354.03 and 287,379.70 is: 430,942.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,420.70 : 936,354.03 = 287,379.70 : x
  2. Step 2: Convert to fraction form
    624,420.70/936,354.03 = 287,379.70/x
  3. Step 3: Cross multiply
    624,420.70x = 936,354.03 × 287,379.70
  4. Step 4: Simplify right side
    624,420.70x = 269,089,140,235.19
  5. Step 5: Solve for x
    x = 269,089,140,235.19/624,420.70
  6. Step 6: Final answer
    x = 430,942.06

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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.