Home / 726,784,012.80-1,090,176,019.20-420,673,996.80

Finding the Fourth Proportional to 726,784,012.80, 1,090,176,019.20 and 420,673,996.80

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Solution

The fourth proportional to 726,784,012.80, 1,090,176,019.20 and 420,673,996.80 is: 631,010,995.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    726,784,012.80 : 1,090,176,019.20 = 420,673,996.80 : x
  2. Step 2: Convert to fraction form
    726,784,012.80/1,090,176,019.20 = 420,673,996.80/x
  3. Step 3: Cross multiply
    726,784,012.80x = 1,090,176,019.20 × 420,673,996.80
  4. Step 4: Simplify right side
    726,784,012.80x = 458,608,703,212,377,600
  5. Step 5: Solve for x
    x = 458,608,703,212,377,600/726,784,012.80
  6. Step 6: Final answer
    x = 631,010,995.20

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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.