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Finding the Fourth Proportional to 404,107.20, 607,035.60 and 389,235.60

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Solution

The fourth proportional to 404,107.20, 607,035.60 and 389,235.60 is: 584,696.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,107.20 : 607,035.60 = 389,235.60 : x
  2. Step 2: Convert to fraction form
    404,107.20/607,035.60 = 389,235.60/x
  3. Step 3: Cross multiply
    404,107.20x = 607,035.60 × 389,235.60
  4. Step 4: Simplify right side
    404,107.20x = 236,279,865,987.36
  5. Step 5: Solve for x
    x = 236,279,865,987.36/404,107.20
  6. Step 6: Final answer
    x = 584,696.01

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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.