Home / 687,413.78-1,031,109.32-282,523.94

Finding the Fourth Proportional to 687,413.78, 1,031,109.32 and 282,523.94

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Solution

The fourth proportional to 687,413.78, 1,031,109.32 and 282,523.94 is: 423,781.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,413.78 : 1,031,109.32 = 282,523.94 : x
  2. Step 2: Convert to fraction form
    687,413.78/1,031,109.32 = 282,523.94/x
  3. Step 3: Cross multiply
    687,413.78x = 1,031,109.32 × 282,523.94
  4. Step 4: Simplify right side
    687,413.78x = 291,313,067,657.12
  5. Step 5: Solve for x
    x = 291,313,067,657.12/687,413.78
  6. Step 6: Final answer
    x = 423,781.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.