Home / 626,128.84-938,784.78-412,249.36

Finding the Fourth Proportional to 626,128.84, 938,784.78 and 412,249.36

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Solution

The fourth proportional to 626,128.84, 938,784.78 and 412,249.36 is: 618,105.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,128.84 : 938,784.78 = 412,249.36 : x
  2. Step 2: Convert to fraction form
    626,128.84/938,784.78 = 412,249.36/x
  3. Step 3: Cross multiply
    626,128.84x = 938,784.78 × 412,249.36
  4. Step 4: Simplify right side
    626,128.84x = 387,013,424,732.74
  5. Step 5: Solve for x
    x = 387,013,424,732.74/626,128.84
  6. Step 6: Final answer
    x = 618,105.09

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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.