Home / 800,789.63-1,105,089.73-438,213.49

Finding the Fourth Proportional to 800,789.63, 1,105,089.73 and 438,213.49

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Solution

The fourth proportional to 800,789.63, 1,105,089.73 and 438,213.49 is: 604,734.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,789.63 : 1,105,089.73 = 438,213.49 : x
  2. Step 2: Convert to fraction form
    800,789.63/1,105,089.73 = 438,213.49/x
  3. Step 3: Cross multiply
    800,789.63x = 1,105,089.73 × 438,213.49
  4. Step 4: Simplify right side
    800,789.63x = 484,265,223,488.20
  5. Step 5: Solve for x
    x = 484,265,223,488.20/800,789.63
  6. Step 6: Final answer
    x = 604,734.64

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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.