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Finding the Fourth Proportional to 828,661.80, 1,243,648.80 and 323,464.80

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Solution

The fourth proportional to 828,661.80, 1,243,648.80 and 323,464.80 is: 485,453.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,661.80 : 1,243,648.80 = 323,464.80 : x
  2. Step 2: Convert to fraction form
    828,661.80/1,243,648.80 = 323,464.80/x
  3. Step 3: Cross multiply
    828,661.80x = 1,243,648.80 × 323,464.80
  4. Step 4: Simplify right side
    828,661.80x = 402,276,610,362.24
  5. Step 5: Solve for x
    x = 402,276,610,362.24/828,661.80
  6. Step 6: Final answer
    x = 485,453.31

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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.