Home / 725,981,618.40-1,089,397,580.40-265,966,288.80

Finding the Fourth Proportional to 725,981,618.40, 1,089,397,580.40 and 265,966,288.80

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Solution

The fourth proportional to 725,981,618.40, 1,089,397,580.40 and 265,966,288.80 is: 399,105,189.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,981,618.40 : 1,089,397,580.40 = 265,966,288.80 : x
  2. Step 2: Convert to fraction form
    725,981,618.40/1,089,397,580.40 = 265,966,288.80/x
  3. Step 3: Cross multiply
    725,981,618.40x = 1,089,397,580.40 × 265,966,288.80
  4. Step 4: Simplify right side
    725,981,618.40x = 289,743,031,486,687,680
  5. Step 5: Solve for x
    x = 289,743,031,486,687,680/725,981,618.40
  6. Step 6: Final answer
    x = 399,105,189.64

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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.