Home / 869,822,911.80-1,200,355,816.14-478,682,335.80

Finding the Fourth Proportional to 869,822,911.80, 1,200,355,816.14 and 478,682,335.80

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Solution

The fourth proportional to 869,822,911.80, 1,200,355,816.14 and 478,682,335.80 is: 660,581,732.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,911.80 : 1,200,355,816.14 = 478,682,335.80 : x
  2. Step 2: Convert to fraction form
    869,822,911.80/1,200,355,816.14 = 478,682,335.80/x
  3. Step 3: Cross multiply
    869,822,911.80x = 1,200,355,816.14 × 478,682,335.80
  4. Step 4: Simplify right side
    869,822,911.80x = 574,589,125,861,010,624
  5. Step 5: Solve for x
    x = 574,589,125,861,010,624/869,822,911.80
  6. Step 6: Final answer
    x = 660,581,732.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.