Home / 855,402.79-1,180,413.78-487,894.45

Finding the Fourth Proportional to 855,402.79, 1,180,413.78 and 487,894.45

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Solution

The fourth proportional to 855,402.79, 1,180,413.78 and 487,894.45 is: 673,270.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,402.79 : 1,180,413.78 = 487,894.45 : x
  2. Step 2: Convert to fraction form
    855,402.79/1,180,413.78 = 487,894.45/x
  3. Step 3: Cross multiply
    855,402.79x = 1,180,413.78 × 487,894.45
  4. Step 4: Simplify right side
    855,402.79x = 575,917,331,965.52
  5. Step 5: Solve for x
    x = 575,917,331,965.52/855,402.79
  6. Step 6: Final answer
    x = 673,270.35

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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.