Home / 800,787.85-1,105,087.34-438,211.79

Finding the Fourth Proportional to 800,787.85, 1,105,087.34 and 438,211.79

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Solution

The fourth proportional to 800,787.85, 1,105,087.34 and 438,211.79 is: 604,732.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,787.85 : 1,105,087.34 = 438,211.79 : x
  2. Step 2: Convert to fraction form
    800,787.85/1,105,087.34 = 438,211.79/x
  3. Step 3: Cross multiply
    800,787.85x = 1,105,087.34 × 438,211.79
  4. Step 4: Simplify right side
    800,787.85x = 484,262,301,081.91
  5. Step 5: Solve for x
    x = 484,262,301,081.91/800,787.85
  6. Step 6: Final answer
    x = 604,732.33

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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.