Home / 389,942.20-584,913.30-355,535.80

Finding the Fourth Proportional to 389,942.20, 584,913.30 and 355,535.80

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Solution

The fourth proportional to 389,942.20, 584,913.30 and 355,535.80 is: 533,303.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,942.20 : 584,913.30 = 355,535.80 : x
  2. Step 2: Convert to fraction form
    389,942.20/584,913.30 = 355,535.80/x
  3. Step 3: Cross multiply
    389,942.20x = 584,913.30 × 355,535.80
  4. Step 4: Simplify right side
    389,942.20x = 207,957,618,046.14
  5. Step 5: Solve for x
    x = 207,957,618,046.14/389,942.20
  6. Step 6: Final answer
    x = 533,303.70

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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.