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Finding the Fourth Proportional to 557,685.40, 835,604.70 and 320,614.60

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Solution

The fourth proportional to 557,685.40, 835,604.70 and 320,614.60 is: 480,391.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    557,685.40 : 835,604.70 = 320,614.60 : x
  2. Step 2: Convert to fraction form
    557,685.40/835,604.70 = 320,614.60/x
  3. Step 3: Cross multiply
    557,685.40x = 835,604.70 × 320,614.60
  4. Step 4: Simplify right side
    557,685.40x = 267,907,066,648.62
  5. Step 5: Solve for x
    x = 267,907,066,648.62/557,685.40
  6. Step 6: Final answer
    x = 480,391.04

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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.