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Finding the Fourth Proportional to 436,415.40, 654,623.10 and 367,986.60

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Solution

The fourth proportional to 436,415.40, 654,623.10 and 367,986.60 is: 551,979.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,415.40 : 654,623.10 = 367,986.60 : x
  2. Step 2: Convert to fraction form
    436,415.40/654,623.10 = 367,986.60/x
  3. Step 3: Cross multiply
    436,415.40x = 654,623.10 × 367,986.60
  4. Step 4: Simplify right side
    436,415.40x = 240,892,528,850.46
  5. Step 5: Solve for x
    x = 240,892,528,850.46/436,415.40
  6. Step 6: Final answer
    x = 551,979.90

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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.