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Finding the Fourth Proportional to 888,771.80, 1,333,272.90 and 439,722.20

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Solution

The fourth proportional to 888,771.80, 1,333,272.90 and 439,722.20 is: 659,640.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    888,771.80 : 1,333,272.90 = 439,722.20 : x
  2. Step 2: Convert to fraction form
    888,771.80/1,333,272.90 = 439,722.20/x
  3. Step 3: Cross multiply
    888,771.80x = 1,333,272.90 × 439,722.20
  4. Step 4: Simplify right side
    888,771.80x = 586,269,692,788.38
  5. Step 5: Solve for x
    x = 586,269,692,788.38/888,771.80
  6. Step 6: Final answer
    x = 659,640.30

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1.5x scale

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.