Home / 814,480.18-1,215,106.79-770,390.26

Finding the Fourth Proportional to 814,480.18, 1,215,106.79 and 770,390.26

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Solution

The fourth proportional to 814,480.18, 1,215,106.79 and 770,390.26 is: 1,149,329.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    814,480.18 : 1,215,106.79 = 770,390.26 : x
  2. Step 2: Convert to fraction form
    814,480.18/1,215,106.79 = 770,390.26/x
  3. Step 3: Cross multiply
    814,480.18x = 1,215,106.79 × 770,390.26
  4. Step 4: Simplify right side
    814,480.18x = 936,106,435,875.87
  5. Step 5: Solve for x
    x = 936,106,435,875.87/814,480.18
  6. Step 6: Final answer
    x = 1,149,329.91

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.