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Finding the Fourth Proportional to 786,656.91, 1,179,992.19 and 254,178

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Solution

The fourth proportional to 786,656.91, 1,179,992.19 and 254,178 is: 381,269.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    786,656.91 : 1,179,992.19 = 254,178 : x
  2. Step 2: Convert to fraction form
    786,656.91/1,179,992.19 = 254,178/x
  3. Step 3: Cross multiply
    786,656.91x = 1,179,992.19 × 254,178
  4. Step 4: Simplify right side
    786,656.91x = 299,928,054,869.82
  5. Step 5: Solve for x
    x = 299,928,054,869.82/786,656.91
  6. Step 6: Final answer
    x = 381,269.21

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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.