Home / 547,986.20-821,979.30-359,029.40

Finding the Fourth Proportional to 547,986.20, 821,979.30 and 359,029.40

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Solution

The fourth proportional to 547,986.20, 821,979.30 and 359,029.40 is: 538,544.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,986.20 : 821,979.30 = 359,029.40 : x
  2. Step 2: Convert to fraction form
    547,986.20/821,979.30 = 359,029.40/x
  3. Step 3: Cross multiply
    547,986.20x = 821,979.30 × 359,029.40
  4. Step 4: Simplify right side
    547,986.20x = 295,114,734,891.42
  5. Step 5: Solve for x
    x = 295,114,734,891.42/547,986.20
  6. Step 6: Final answer
    x = 538,544.10

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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.