Home / 289,656,556.80-434,484,835.20-71,305,164.60

Finding the Fourth Proportional to 289,656,556.80, 434,484,835.20 and 71,305,164.60

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Solution

The fourth proportional to 289,656,556.80, 434,484,835.20 and 71,305,164.60 is: 106,957,746.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,656,556.80 : 434,484,835.20 = 71,305,164.60 : x
  2. Step 2: Convert to fraction form
    289,656,556.80/434,484,835.20 = 71,305,164.60/x
  3. Step 3: Cross multiply
    289,656,556.80x = 434,484,835.20 × 71,305,164.60
  4. Step 4: Simplify right side
    289,656,556.80x = 30,981,012,690,139,872
  5. Step 5: Solve for x
    x = 30,981,012,690,139,872/289,656,556.80
  6. Step 6: Final answer
    x = 106,957,746.90

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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.