Home / 1,216,241.62-1,678,413.18-664,959.31

Finding the Fourth Proportional to 1,216,241.62, 1,678,413.18 and 664,959.31

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Solution

The fourth proportional to 1,216,241.62, 1,678,413.18 and 664,959.31 is: 917,643.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,216,241.62 : 1,678,413.18 = 664,959.31 : x
  2. Step 2: Convert to fraction form
    1,216,241.62/1,678,413.18 = 664,959.31/x
  3. Step 3: Cross multiply
    1,216,241.62x = 1,678,413.18 × 664,959.31
  4. Step 4: Simplify right side
    1,216,241.62x = 1,116,076,470,067.71
  5. Step 5: Solve for x
    x = 1,116,076,470,067.71/1,216,241.62
  6. Step 6: Final answer
    x = 917,643.71

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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.