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Finding the Fourth Proportional to 886,608.59, 1,330,107.35 and 287,630.33

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Solution

The fourth proportional to 886,608.59, 1,330,107.35 and 287,630.33 is: 431,508.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,608.59 : 1,330,107.35 = 287,630.33 : x
  2. Step 2: Convert to fraction form
    886,608.59/1,330,107.35 = 287,630.33/x
  3. Step 3: Cross multiply
    886,608.59x = 1,330,107.35 × 287,630.33
  4. Step 4: Simplify right side
    886,608.59x = 382,579,207,927.24
  5. Step 5: Solve for x
    x = 382,579,207,927.24/886,608.59
  6. Step 6: Final answer
    x = 431,508.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.