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Finding the Fourth Proportional to 904,287, 1,247,974.38 and 501,879

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Solution

The fourth proportional to 904,287, 1,247,974.38 and 501,879 is: 692,625.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    904,287 : 1,247,974.38 = 501,879 : x
  2. Step 2: Convert to fraction form
    904,287/1,247,974.38 = 501,879/x
  3. Step 3: Cross multiply
    904,287x = 1,247,974.38 × 501,879
  4. Step 4: Simplify right side
    904,287x = 626,332,133,860.02
  5. Step 5: Solve for x
    x = 626,332,133,860.02/904,287
  6. Step 6: Final answer
    x = 692,625.39

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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.