Home / 828,851.20-1,242,662.40-355,148.80

Finding the Fourth Proportional to 828,851.20, 1,242,662.40 and 355,148.80

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Solution

The fourth proportional to 828,851.20, 1,242,662.40 and 355,148.80 is: 532,459.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,851.20 : 1,242,662.40 = 355,148.80 : x
  2. Step 2: Convert to fraction form
    828,851.20/1,242,662.40 = 355,148.80/x
  3. Step 3: Cross multiply
    828,851.20x = 1,242,662.40 × 355,148.80
  4. Step 4: Simplify right side
    828,851.20x = 441,330,060,165.12
  5. Step 5: Solve for x
    x = 441,330,060,165.12/828,851.20
  6. Step 6: Final answer
    x = 532,459.94

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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.