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Finding the Fourth Proportional to 404,362.20, 606,543.30 and 384,679.20

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Solution

The fourth proportional to 404,362.20, 606,543.30 and 384,679.20 is: 577,018.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,362.20 : 606,543.30 = 384,679.20 : x
  2. Step 2: Convert to fraction form
    404,362.20/606,543.30 = 384,679.20/x
  3. Step 3: Cross multiply
    404,362.20x = 606,543.30 × 384,679.20
  4. Step 4: Simplify right side
    404,362.20x = 233,324,591,409.36
  5. Step 5: Solve for x
    x = 233,324,591,409.36/404,362.20
  6. Step 6: Final answer
    x = 577,018.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.