Home / 425,718,711.20-638,578,066.80-323,682,039.20

Finding the Fourth Proportional to 425,718,711.20, 638,578,066.80 and 323,682,039.20

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Solution

The fourth proportional to 425,718,711.20, 638,578,066.80 and 323,682,039.20 is: 485,523,058.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,711.20 : 638,578,066.80 = 323,682,039.20 : x
  2. Step 2: Convert to fraction form
    425,718,711.20/638,578,066.80 = 323,682,039.20/x
  3. Step 3: Cross multiply
    425,718,711.20x = 638,578,066.80 × 323,682,039.20
  4. Step 4: Simplify right side
    425,718,711.20x = 206,696,250,850,217,792
  5. Step 5: Solve for x
    x = 206,696,250,850,217,792/425,718,711.20
  6. Step 6: Final answer
    x = 485,523,058.80

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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.