Home / 521,761,193.28-720,039,391.04-286,821,756

Finding the Fourth Proportional to 521,761,193.28, 720,039,391.04 and 286,821,756

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Solution

The fourth proportional to 521,761,193.28, 720,039,391.04 and 286,821,756 is: 395,818,940.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,761,193.28 : 720,039,391.04 = 286,821,756 : x
  2. Step 2: Convert to fraction form
    521,761,193.28/720,039,391.04 = 286,821,756/x
  3. Step 3: Cross multiply
    521,761,193.28x = 720,039,391.04 × 286,821,756
  4. Step 4: Simplify right side
    521,761,193.28x = 206,522,962,527,263,456
  5. Step 5: Solve for x
    x = 206,522,962,527,263,456/521,761,193.28
  6. Step 6: Final answer
    x = 395,818,940.13

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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.