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Finding the Fourth Proportional to 909,469, 1,255,050.21 and 501,608.89

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Solution

The fourth proportional to 909,469, 1,255,050.21 and 501,608.89 is: 692,210.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    909,469 : 1,255,050.21 = 501,608.89 : x
  2. Step 2: Convert to fraction form
    909,469/1,255,050.21 = 501,608.89/x
  3. Step 3: Cross multiply
    909,469x = 1,255,050.21 × 501,608.89
  4. Step 4: Simplify right side
    909,469x = 629,544,342,732.37
  5. Step 5: Solve for x
    x = 629,544,342,732.37/909,469
  6. Step 6: Final answer
    x = 692,210.89

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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.