Home / 626,021.81-939,107.20-199,407.80

Finding the Fourth Proportional to 626,021.81, 939,107.20 and 199,407.80

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Solution

The fourth proportional to 626,021.81, 939,107.20 and 199,407.80 is: 299,135.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,021.81 : 939,107.20 = 199,407.80 : x
  2. Step 2: Convert to fraction form
    626,021.81/939,107.20 = 199,407.80/x
  3. Step 3: Cross multiply
    626,021.81x = 939,107.20 × 199,407.80
  4. Step 4: Simplify right side
    626,021.81x = 187,265,300,716.16
  5. Step 5: Solve for x
    x = 187,265,300,716.16/626,021.81
  6. Step 6: Final answer
    x = 299,135.43

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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.