Home / 854,121.33-1,178,631.27-491,486.66

Finding the Fourth Proportional to 854,121.33, 1,178,631.27 and 491,486.66

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Solution

The fourth proportional to 854,121.33, 1,178,631.27 and 491,486.66 is: 678,219.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,121.33 : 1,178,631.27 = 491,486.66 : x
  2. Step 2: Convert to fraction form
    854,121.33/1,178,631.27 = 491,486.66/x
  3. Step 3: Cross multiply
    854,121.33x = 1,178,631.27 × 491,486.66
  4. Step 4: Simplify right side
    854,121.33x = 579,281,546,263.86
  5. Step 5: Solve for x
    x = 579,281,546,263.86/854,121.33
  6. Step 6: Final answer
    x = 678,219.27

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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.