Home / 725,981,438.40-1,089,397,310.40-265,966,108.80

Finding the Fourth Proportional to 725,981,438.40, 1,089,397,310.40 and 265,966,108.80

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Solution

The fourth proportional to 725,981,438.40, 1,089,397,310.40 and 265,966,108.80 is: 399,104,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,981,438.40 : 1,089,397,310.40 = 265,966,108.80 : x
  2. Step 2: Convert to fraction form
    725,981,438.40/1,089,397,310.40 = 265,966,108.80/x
  3. Step 3: Cross multiply
    725,981,438.40x = 1,089,397,310.40 × 265,966,108.80
  4. Step 4: Simplify right side
    725,981,438.40x = 289,742,763,584,273,792
  5. Step 5: Solve for x
    x = 289,742,763,584,273,792/725,981,438.40
  6. Step 6: Final answer
    x = 399,104,919.57

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1.5x scale

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.