Home / 869,822,937.80-1,200,355,852.04-478,682,361.80

Finding the Fourth Proportional to 869,822,937.80, 1,200,355,852.04 and 478,682,361.80

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Solution

The fourth proportional to 869,822,937.80, 1,200,355,852.04 and 478,682,361.80 is: 660,581,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,822,937.80 : 1,200,355,852.04 = 478,682,361.80 : x
  2. Step 2: Convert to fraction form
    869,822,937.80/1,200,355,852.04 = 478,682,361.80/x
  3. Step 3: Cross multiply
    869,822,937.80x = 1,200,355,852.04 × 478,682,361.80
  4. Step 4: Simplify right side
    869,822,937.80x = 574,589,174,254,958,528
  5. Step 5: Solve for x
    x = 574,589,174,254,958,528/869,822,937.80
  6. Step 6: Final answer
    x = 660,581,768.18

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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.