Home / 425,719,151.20-638,578,726.80-323,682,479.20

Finding the Fourth Proportional to 425,719,151.20, 638,578,726.80 and 323,682,479.20

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Solution

The fourth proportional to 425,719,151.20, 638,578,726.80 and 323,682,479.20 is: 485,523,718.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,719,151.20 : 638,578,726.80 = 323,682,479.20 : x
  2. Step 2: Convert to fraction form
    425,719,151.20/638,578,726.80 = 323,682,479.20/x
  3. Step 3: Cross multiply
    425,719,151.20x = 638,578,726.80 × 323,682,479.20
  4. Step 4: Simplify right side
    425,719,151.20x = 206,696,745,455,003,456
  5. Step 5: Solve for x
    x = 206,696,745,455,003,456/425,719,151.20
  6. Step 6: Final answer
    x = 485,523,718.80

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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.