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Finding the Fourth Proportional to 572,201.36, 789,455.40 and 330,452

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Solution

The fourth proportional to 572,201.36, 789,455.40 and 330,452 is: 455,918.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,201.36 : 789,455.40 = 330,452 : x
  2. Step 2: Convert to fraction form
    572,201.36/789,455.40 = 330,452/x
  3. Step 3: Cross multiply
    572,201.36x = 789,455.40 × 330,452
  4. Step 4: Simplify right side
    572,201.36x = 260,877,115,840.80
  5. Step 5: Solve for x
    x = 260,877,115,840.80/572,201.36
  6. Step 6: Final answer
    x = 455,918.38

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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.