Home / 800,785.83-1,105,084.53-438,209.70

Finding the Fourth Proportional to 800,785.83, 1,105,084.53 and 438,209.70

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Solution

The fourth proportional to 800,785.83, 1,105,084.53 and 438,209.70 is: 604,729.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,785.83 : 1,105,084.53 = 438,209.70 : x
  2. Step 2: Convert to fraction form
    800,785.83/1,105,084.53 = 438,209.70/x
  3. Step 3: Cross multiply
    800,785.83x = 1,105,084.53 × 438,209.70
  4. Step 4: Simplify right side
    800,785.83x = 484,258,760,365.94
  5. Step 5: Solve for x
    x = 484,258,760,365.94/800,785.83
  6. Step 6: Final answer
    x = 604,729.43

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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.