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Finding the Fourth Proportional to 633,138.58, 873,725.27 and 342,742.71

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Solution

The fourth proportional to 633,138.58, 873,725.27 and 342,742.71 is: 472,981.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,138.58 : 873,725.27 = 342,742.71 : x
  2. Step 2: Convert to fraction form
    633,138.58/873,725.27 = 342,742.71/x
  3. Step 3: Cross multiply
    633,138.58x = 873,725.27 × 342,742.71
  4. Step 4: Simplify right side
    633,138.58x = 299,462,965,121.57
  5. Step 5: Solve for x
    x = 299,462,965,121.57/633,138.58
  6. Step 6: Final answer
    x = 472,981.71

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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.