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Finding the Fourth Proportional to 647,886.40, 972,315.60 and 332,180.80

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Solution

The fourth proportional to 647,886.40, 972,315.60 and 332,180.80 is: 498,520.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,886.40 : 972,315.60 = 332,180.80 : x
  2. Step 2: Convert to fraction form
    647,886.40/972,315.60 = 332,180.80/x
  3. Step 3: Cross multiply
    647,886.40x = 972,315.60 × 332,180.80
  4. Step 4: Simplify right side
    647,886.40x = 322,984,573,860.48
  5. Step 5: Solve for x
    x = 322,984,573,860.48/647,886.40
  6. Step 6: Final answer
    x = 498,520.38

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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.