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Finding the Fourth Proportional to 404,567.80, 605,469.30 and 354,801.40

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Solution

The fourth proportional to 404,567.80, 605,469.30 and 354,801.40 is: 530,989.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,567.80 : 605,469.30 = 354,801.40 : x
  2. Step 2: Convert to fraction form
    404,567.80/605,469.30 = 354,801.40/x
  3. Step 3: Cross multiply
    404,567.80x = 605,469.30 × 354,801.40
  4. Step 4: Simplify right side
    404,567.80x = 214,821,355,297.02
  5. Step 5: Solve for x
    x = 214,821,355,297.02/404,567.80
  6. Step 6: Final answer
    x = 530,989.75

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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.