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Finding the Fourth Proportional to 439,673.48, 659,288.46 and 313,241.48

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Solution

The fourth proportional to 439,673.48, 659,288.46 and 313,241.48 is: 469,704.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,673.48 : 659,288.46 = 313,241.48 : x
  2. Step 2: Convert to fraction form
    439,673.48/659,288.46 = 313,241.48/x
  3. Step 3: Cross multiply
    439,673.48x = 659,288.46 × 313,241.48
  4. Step 4: Simplify right side
    439,673.48x = 206,516,492,957.32
  5. Step 5: Solve for x
    x = 206,516,492,957.32/439,673.48
  6. Step 6: Final answer
    x = 469,704.23

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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.