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Finding the Fourth Proportional to 484,977.20, 727,465.80 and 442,986.80

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Solution

The fourth proportional to 484,977.20, 727,465.80 and 442,986.80 is: 664,480.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    484,977.20 : 727,465.80 = 442,986.80 : x
  2. Step 2: Convert to fraction form
    484,977.20/727,465.80 = 442,986.80/x
  3. Step 3: Cross multiply
    484,977.20x = 727,465.80 × 442,986.80
  4. Step 4: Simplify right side
    484,977.20x = 322,257,746,851.44
  5. Step 5: Solve for x
    x = 322,257,746,851.44/484,977.20
  6. Step 6: Final answer
    x = 664,480.20

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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.