Home / 820,653.21-1,132,690.38-481,230.81

Finding the Fourth Proportional to 820,653.21, 1,132,690.38 and 481,230.81

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Solution

The fourth proportional to 820,653.21, 1,132,690.38 and 481,230.81 is: 664,209.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,653.21 : 1,132,690.38 = 481,230.81 : x
  2. Step 2: Convert to fraction form
    820,653.21/1,132,690.38 = 481,230.81/x
  3. Step 3: Cross multiply
    820,653.21x = 1,132,690.38 × 481,230.81
  4. Step 4: Simplify right side
    820,653.21x = 545,085,509,046.61
  5. Step 5: Solve for x
    x = 545,085,509,046.61/820,653.21
  6. Step 6: Final answer
    x = 664,209.32

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1.5x scale

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.