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Finding the Fourth Proportional to 628,487.36, 867,330.96 and 342,026

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Solution

The fourth proportional to 628,487.36, 867,330.96 and 342,026 is: 472,005.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,487.36 : 867,330.96 = 342,026 : x
  2. Step 2: Convert to fraction form
    628,487.36/867,330.96 = 342,026/x
  3. Step 3: Cross multiply
    628,487.36x = 867,330.96 × 342,026
  4. Step 4: Simplify right side
    628,487.36x = 296,649,738,924.96
  5. Step 5: Solve for x
    x = 296,649,738,924.96/628,487.36
  6. Step 6: Final answer
    x = 472,005.90

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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.