Home / 800,780.39-1,105,076.83-438,204.29

Finding the Fourth Proportional to 800,780.39, 1,105,076.83 and 438,204.29

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Solution

The fourth proportional to 800,780.39, 1,105,076.83 and 438,204.29 is: 604,721.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,780.39 : 1,105,076.83 = 438,204.29 : x
  2. Step 2: Convert to fraction form
    800,780.39/1,105,076.83 = 438,204.29/x
  3. Step 3: Cross multiply
    800,780.39x = 1,105,076.83 × 438,204.29
  4. Step 4: Simplify right side
    800,780.39x = 484,249,405,208.74
  5. Step 5: Solve for x
    x = 484,249,405,208.74/800,780.39
  6. Step 6: Final answer
    x = 604,721.86

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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.