Home / 425,718,455.20-638,577,682.80-323,681,783.20

Finding the Fourth Proportional to 425,718,455.20, 638,577,682.80 and 323,681,783.20

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Solution

The fourth proportional to 425,718,455.20, 638,577,682.80 and 323,681,783.20 is: 485,522,674.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,718,455.20 : 638,577,682.80 = 323,681,783.20 : x
  2. Step 2: Convert to fraction form
    425,718,455.20/638,577,682.80 = 323,681,783.20/x
  3. Step 3: Cross multiply
    425,718,455.20x = 638,577,682.80 × 323,681,783.20
  4. Step 4: Simplify right side
    425,718,455.20x = 206,695,963,080,427,936
  5. Step 5: Solve for x
    x = 206,695,963,080,427,936/425,718,455.20
  6. Step 6: Final answer
    x = 485,522,674.80

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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.