Home / 854,126.52-1,178,638.43-491,491.85

Finding the Fourth Proportional to 854,126.52, 1,178,638.43 and 491,491.85

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Solution

The fourth proportional to 854,126.52, 1,178,638.43 and 491,491.85 is: 678,226.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,126.52 : 1,178,638.43 = 491,491.85 : x
  2. Step 2: Convert to fraction form
    854,126.52/1,178,638.43 = 491,491.85/x
  3. Step 3: Cross multiply
    854,126.52x = 1,178,638.43 × 491,491.85
  4. Step 4: Simplify right side
    854,126.52x = 579,291,174,091.14
  5. Step 5: Solve for x
    x = 579,291,174,091.14/854,126.52
  6. Step 6: Final answer
    x = 678,226.43

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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.