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Finding the Fourth Proportional to 650,698.76, 897,915.26 and 396,021.80

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Solution

The fourth proportional to 650,698.76, 897,915.26 and 396,021.80 is: 546,480.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    650,698.76 : 897,915.26 = 396,021.80 : x
  2. Step 2: Convert to fraction form
    650,698.76/897,915.26 = 396,021.80/x
  3. Step 3: Cross multiply
    650,698.76x = 897,915.26 × 396,021.80
  4. Step 4: Simplify right side
    650,698.76x = 355,594,017,512.67
  5. Step 5: Solve for x
    x = 355,594,017,512.67/650,698.76
  6. Step 6: Final answer
    x = 546,480.24

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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.