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Finding the Fourth Proportional to 628,959.68, 867,963.72 and 342,481.76

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Solution

The fourth proportional to 628,959.68, 867,963.72 and 342,481.76 is: 472,624.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,959.68 : 867,963.72 = 342,481.76 : x
  2. Step 2: Convert to fraction form
    628,959.68/867,963.72 = 342,481.76/x
  3. Step 3: Cross multiply
    628,959.68x = 867,963.72 × 342,481.76
  4. Step 4: Simplify right side
    628,959.68x = 297,261,742,441.75
  5. Step 5: Solve for x
    x = 297,261,742,441.75/628,959.68
  6. Step 6: Final answer
    x = 472,624.48

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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.