Home / 644,268,986.76-966,397,305.24-381,764,578.47

Finding the Fourth Proportional to 644,268,986.76, 966,397,305.24 and 381,764,578.47

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Solution

The fourth proportional to 644,268,986.76, 966,397,305.24 and 381,764,578.47 is: 572,643,208.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,268,986.76 : 966,397,305.24 = 381,764,578.47 : x
  2. Step 2: Convert to fraction form
    644,268,986.76/966,397,305.24 = 381,764,578.47/x
  3. Step 3: Cross multiply
    644,268,986.76x = 966,397,305.24 × 381,764,578.47
  4. Step 4: Simplify right side
    644,268,986.76x = 368,936,259,869,492,544
  5. Step 5: Solve for x
    x = 368,936,259,869,492,544/644,268,986.76
  6. Step 6: Final answer
    x = 572,643,208.74

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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.