Home / 854,579.50-1,178,963.37-491,916.58

Finding the Fourth Proportional to 854,579.50, 1,178,963.37 and 491,916.58

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Solution

The fourth proportional to 854,579.50, 1,178,963.37 and 491,916.58 is: 678,639.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,579.50 : 1,178,963.37 = 491,916.58 : x
  2. Step 2: Convert to fraction form
    854,579.50/1,178,963.37 = 491,916.58/x
  3. Step 3: Cross multiply
    854,579.50x = 1,178,963.37 × 491,916.58
  4. Step 4: Simplify right side
    854,579.50x = 579,951,628,915.68
  5. Step 5: Solve for x
    x = 579,951,628,915.68/854,579.50
  6. Step 6: Final answer
    x = 678,639.76

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.