Home / 508,004,880.66-762,005,838.60-139,540,184.78

Finding the Fourth Proportional to 508,004,880.66, 762,005,838.60 and 139,540,184.78

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Solution

The fourth proportional to 508,004,880.66, 762,005,838.60 and 139,540,184.78 is: 209,309,869.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,004,880.66 : 762,005,838.60 = 139,540,184.78 : x
  2. Step 2: Convert to fraction form
    508,004,880.66/762,005,838.60 = 139,540,184.78/x
  3. Step 3: Cross multiply
    508,004,880.66x = 762,005,838.60 × 139,540,184.78
  4. Step 4: Simplify right side
    508,004,880.66x = 106,330,435,517,872,832
  5. Step 5: Solve for x
    x = 106,330,435,517,872,832/508,004,880.66
  6. Step 6: Final answer
    x = 209,309,869.98

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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.