Home / 425,718,723.20-638,578,084.80-323,682,051.20

Finding the Fourth Proportional to 425,718,723.20, 638,578,084.80 and 323,682,051.20

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Solution

The fourth proportional to 425,718,723.20, 638,578,084.80 and 323,682,051.20 is: 485,523,076.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,723.20 : 638,578,084.80 = 323,682,051.20 : x
  2. Step 2: Convert to fraction form
    425,718,723.20/638,578,084.80 = 323,682,051.20/x
  3. Step 3: Cross multiply
    425,718,723.20x = 638,578,084.80 × 323,682,051.20
  4. Step 4: Simplify right side
    425,718,723.20x = 206,696,264,339,431,520
  5. Step 5: Solve for x
    x = 206,696,264,339,431,520/425,718,723.20
  6. Step 6: Final answer
    x = 485,523,076.80

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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.