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Finding the Fourth Proportional to 628,499.70, 867,337.65 and 342,027.54

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Solution

The fourth proportional to 628,499.70, 867,337.65 and 342,027.54 is: 472,002.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,499.70 : 867,337.65 = 342,027.54 : x
  2. Step 2: Convert to fraction form
    628,499.70/867,337.65 = 342,027.54/x
  3. Step 3: Cross multiply
    628,499.70x = 867,337.65 × 342,027.54
  4. Step 4: Simplify right side
    628,499.70x = 296,653,362,778.88
  5. Step 5: Solve for x
    x = 296,653,362,778.88/628,499.70
  6. Step 6: Final answer
    x = 472,002.39

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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.