Home / 628,708.47-867,617.79-342,228.53

Finding the Fourth Proportional to 628,708.47, 867,617.79 and 342,228.53

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Solution

The fourth proportional to 628,708.47, 867,617.79 and 342,228.53 is: 472,275.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,708.47 : 867,617.79 = 342,228.53 : x
  2. Step 2: Convert to fraction form
    628,708.47/867,617.79 = 342,228.53/x
  3. Step 3: Cross multiply
    628,708.47x = 867,617.79 × 342,228.53
  4. Step 4: Simplify right side
    628,708.47x = 296,923,560,873.55
  5. Step 5: Solve for x
    x = 296,923,560,873.55/628,708.47
  6. Step 6: Final answer
    x = 472,275.43

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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.