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Finding the Fourth Proportional to 854,178.67, 1,178,798.03 and 467,019.87

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Solution

The fourth proportional to 854,178.67, 1,178,798.03 and 467,019.87 is: 644,504.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,178.67 : 1,178,798.03 = 467,019.87 : x
  2. Step 2: Convert to fraction form
    854,178.67/1,178,798.03 = 467,019.87/x
  3. Step 3: Cross multiply
    854,178.67x = 1,178,798.03 × 467,019.87
  4. Step 4: Simplify right side
    854,178.67x = 550,522,102,726.86
  5. Step 5: Solve for x
    x = 550,522,102,726.86/854,178.67
  6. Step 6: Final answer
    x = 644,504.62

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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.