Home / 389,964.20-584,946.30-329,829.80

Finding the Fourth Proportional to 389,964.20, 584,946.30 and 329,829.80

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Solution

The fourth proportional to 389,964.20, 584,946.30 and 329,829.80 is: 494,744.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,964.20 : 584,946.30 = 329,829.80 : x
  2. Step 2: Convert to fraction form
    389,964.20/584,946.30 = 329,829.80/x
  3. Step 3: Cross multiply
    389,964.20x = 584,946.30 × 329,829.80
  4. Step 4: Simplify right side
    389,964.20x = 192,932,721,139.74
  5. Step 5: Solve for x
    x = 192,932,721,139.74/389,964.20
  6. Step 6: Final answer
    x = 494,744.70

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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.