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Finding the Fourth Proportional to 662,620.80, 993,931.20 and 484,161.60

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Solution

The fourth proportional to 662,620.80, 993,931.20 and 484,161.60 is: 726,242.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    662,620.80 : 993,931.20 = 484,161.60 : x
  2. Step 2: Convert to fraction form
    662,620.80/993,931.20 = 484,161.60/x
  3. Step 3: Cross multiply
    662,620.80x = 993,931.20 × 484,161.60
  4. Step 4: Simplify right side
    662,620.80x = 481,223,320,081.92
  5. Step 5: Solve for x
    x = 481,223,320,081.92/662,620.80
  6. Step 6: Final answer
    x = 726,242.40

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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.