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Finding the Fourth Proportional to 1,354,945.86, 1,869,859.62 and 743,122.98

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Solution

The fourth proportional to 1,354,945.86, 1,869,859.62 and 743,122.98 is: 1,025,528.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,945.86 : 1,869,859.62 = 743,122.98 : x
  2. Step 2: Convert to fraction form
    1,354,945.86/1,869,859.62 = 743,122.98/x
  3. Step 3: Cross multiply
    1,354,945.86x = 1,869,859.62 × 743,122.98
  4. Step 4: Simplify right side
    1,354,945.86x = 1,389,535,652,996.07
  5. Step 5: Solve for x
    x = 1,389,535,652,996.07/1,354,945.86
  6. Step 6: Final answer
    x = 1,025,528.54

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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.