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Finding the Fourth Proportional to 645,852.80, 968,433.60 and 271,452.80

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Solution

The fourth proportional to 645,852.80, 968,433.60 and 271,452.80 is: 407,033.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,852.80 : 968,433.60 = 271,452.80 : x
  2. Step 2: Convert to fraction form
    645,852.80/968,433.60 = 271,452.80/x
  3. Step 3: Cross multiply
    645,852.80x = 968,433.60 × 271,452.80
  4. Step 4: Simplify right side
    645,852.80x = 262,884,012,334.08
  5. Step 5: Solve for x
    x = 262,884,012,334.08/645,852.80
  6. Step 6: Final answer
    x = 407,033.94

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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.