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Finding the Fourth Proportional to 1,393,879.80, 1,923,670.08 and 773,743.32

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Solution

The fourth proportional to 1,393,879.80, 1,923,670.08 and 773,743.32 is: 1,067,830.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,393,879.80 : 1,923,670.08 = 773,743.32 : x
  2. Step 2: Convert to fraction form
    1,393,879.80/1,923,670.08 = 773,743.32/x
  3. Step 3: Cross multiply
    1,393,879.80x = 1,923,670.08 × 773,743.32
  4. Step 4: Simplify right side
    1,393,879.80x = 1,488,426,874,283.87
  5. Step 5: Solve for x
    x = 1,488,426,874,283.87/1,393,879.80
  6. Step 6: Final answer
    x = 1,067,830.15

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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.