Home / 854,578.50-1,178,961.99-491,915.58

Finding the Fourth Proportional to 854,578.50, 1,178,961.99 and 491,915.58

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Solution

The fourth proportional to 854,578.50, 1,178,961.99 and 491,915.58 is: 678,638.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,578.50 : 1,178,961.99 = 491,915.58 : x
  2. Step 2: Convert to fraction form
    854,578.50/1,178,961.99 = 491,915.58/x
  3. Step 3: Cross multiply
    854,578.50x = 1,178,961.99 × 491,915.58
  4. Step 4: Simplify right side
    854,578.50x = 579,949,771,108.80
  5. Step 5: Solve for x
    x = 579,949,771,108.80/854,578.50
  6. Step 6: Final answer
    x = 678,638.38

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1.5x scale

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.