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Finding the Fourth Proportional to 886,883.90, 1,330,653.90 and 287,864.60

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Solution

The fourth proportional to 886,883.90, 1,330,653.90 and 287,864.60 is: 431,903.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    886,883.90 : 1,330,653.90 = 287,864.60 : x
  2. Step 2: Convert to fraction form
    886,883.90/1,330,653.90 = 287,864.60/x
  3. Step 3: Cross multiply
    886,883.90x = 1,330,653.90 × 287,864.60
  4. Step 4: Simplify right side
    886,883.90x = 383,048,152,661.94
  5. Step 5: Solve for x
    x = 383,048,152,661.94/886,883.90
  6. Step 6: Final answer
    x = 431,903.38

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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.