Home / 828,005.20-1,242,007.80-449,107.45

Finding the Fourth Proportional to 828,005.20, 1,242,007.80 and 449,107.45

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Solution

The fourth proportional to 828,005.20, 1,242,007.80 and 449,107.45 is: 673,661.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,005.20 : 1,242,007.80 = 449,107.45 : x
  2. Step 2: Convert to fraction form
    828,005.20/1,242,007.80 = 449,107.45/x
  3. Step 3: Cross multiply
    828,005.20x = 1,242,007.80 × 449,107.45
  4. Step 4: Simplify right side
    828,005.20x = 557,794,955,938.11
  5. Step 5: Solve for x
    x = 557,794,955,938.11/828,005.20
  6. Step 6: Final answer
    x = 673,661.18

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1.5x scale

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.