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Finding the Fourth Proportional to 646,579.96, 892,308 and 360,100

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Solution

The fourth proportional to 646,579.96, 892,308 and 360,100 is: 496,953.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,579.96 : 892,308 = 360,100 : x
  2. Step 2: Convert to fraction form
    646,579.96/892,308 = 360,100/x
  3. Step 3: Cross multiply
    646,579.96x = 892,308 × 360,100
  4. Step 4: Simplify right side
    646,579.96x = 321,320,110,800
  5. Step 5: Solve for x
    x = 321,320,110,800/646,579.96
  6. Step 6: Final answer
    x = 496,953.40

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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.