Home / 969,638.79-1,338,074.08-528,103.33

Finding the Fourth Proportional to 969,638.79, 1,338,074.08 and 528,103.33

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Solution

The fourth proportional to 969,638.79, 1,338,074.08 and 528,103.33 is: 728,767.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    969,638.79 : 1,338,074.08 = 528,103.33 : x
  2. Step 2: Convert to fraction form
    969,638.79/1,338,074.08 = 528,103.33/x
  3. Step 3: Cross multiply
    969,638.79x = 1,338,074.08 × 528,103.33
  4. Step 4: Simplify right side
    969,638.79x = 706,641,377,434.69
  5. Step 5: Solve for x
    x = 706,641,377,434.69/969,638.79
  6. Step 6: Final answer
    x = 728,767.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.