Home / 765,413.79-1,056,231.66-421,282.38

Finding the Fourth Proportional to 765,413.79, 1,056,231.66 and 421,282.38

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Solution

The fourth proportional to 765,413.79, 1,056,231.66 and 421,282.38 is: 581,348.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    765,413.79 : 1,056,231.66 = 421,282.38 : x
  2. Step 2: Convert to fraction form
    765,413.79/1,056,231.66 = 421,282.38/x
  3. Step 3: Cross multiply
    765,413.79x = 1,056,231.66 × 421,282.38
  4. Step 4: Simplify right side
    765,413.79x = 444,971,787,556.15
  5. Step 5: Solve for x
    x = 444,971,787,556.15/765,413.79
  6. Step 6: Final answer
    x = 581,348.02

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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.