Home / 861,838.47-1,189,546.43-499,203.63

Finding the Fourth Proportional to 861,838.47, 1,189,546.43 and 499,203.63

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Solution

The fourth proportional to 861,838.47, 1,189,546.43 and 499,203.63 is: 689,022.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    861,838.47 : 1,189,546.43 = 499,203.63 : x
  2. Step 2: Convert to fraction form
    861,838.47/1,189,546.43 = 499,203.63/x
  3. Step 3: Cross multiply
    861,838.47x = 1,189,546.43 × 499,203.63
  4. Step 4: Simplify right side
    861,838.47x = 593,825,893,413.52
  5. Step 5: Solve for x
    x = 593,825,893,413.52/861,838.47
  6. Step 6: Final answer
    x = 689,022.26

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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.