Home / 431,324.20-646,986.30-406,829.80

Finding the Fourth Proportional to 431,324.20, 646,986.30 and 406,829.80

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Solution

The fourth proportional to 431,324.20, 646,986.30 and 406,829.80 is: 610,244.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,324.20 : 646,986.30 = 406,829.80 : x
  2. Step 2: Convert to fraction form
    431,324.20/646,986.30 = 406,829.80/x
  3. Step 3: Cross multiply
    431,324.20x = 646,986.30 × 406,829.80
  4. Step 4: Simplify right side
    431,324.20x = 263,213,307,031.74
  5. Step 5: Solve for x
    x = 263,213,307,031.74/431,324.20
  6. Step 6: Final answer
    x = 610,244.70

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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.