Home / 521,761,194.28-720,039,392.42-286,821,757

Finding the Fourth Proportional to 521,761,194.28, 720,039,392.42 and 286,821,757

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Solution

The fourth proportional to 521,761,194.28, 720,039,392.42 and 286,821,757 is: 395,818,941.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,761,194.28 : 720,039,392.42 = 286,821,757 : x
  2. Step 2: Convert to fraction form
    521,761,194.28/720,039,392.42 = 286,821,757/x
  3. Step 3: Cross multiply
    521,761,194.28x = 720,039,392.42 × 286,821,757
  4. Step 4: Simplify right side
    521,761,194.28x = 206,522,963,643,116,864
  5. Step 5: Solve for x
    x = 206,522,963,643,116,864/521,761,194.28
  6. Step 6: Final answer
    x = 395,818,941.51

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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.