Home / 725,981,130.90-1,089,396,849.15-265,965,801.30

Finding the Fourth Proportional to 725,981,130.90, 1,089,396,849.15 and 265,965,801.30

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Solution

The fourth proportional to 725,981,130.90, 1,089,396,849.15 and 265,965,801.30 is: 399,104,458.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,981,130.90 : 1,089,396,849.15 = 265,965,801.30 : x
  2. Step 2: Convert to fraction form
    725,981,130.90/1,089,396,849.15 = 265,965,801.30/x
  3. Step 3: Cross multiply
    725,981,130.90x = 1,089,396,849.15 × 265,965,801.30
  4. Step 4: Simplify right side
    725,981,130.90x = 289,742,305,917,875,008
  5. Step 5: Solve for x
    x = 289,742,305,917,875,008/725,981,130.90
  6. Step 6: Final answer
    x = 399,104,458.21

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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.