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Finding the Fourth Proportional to 854,355.76, 1,178,998 and 467,172.42

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Solution

The fourth proportional to 854,355.76, 1,178,998 and 467,172.42 is: 644,690.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    854,355.76 : 1,178,998 = 467,172.42 : x
  2. Step 2: Convert to fraction form
    854,355.76/1,178,998 = 467,172.42/x
  3. Step 3: Cross multiply
    854,355.76x = 1,178,998 × 467,172.42
  4. Step 4: Simplify right side
    854,355.76x = 550,795,348,835.16
  5. Step 5: Solve for x
    x = 550,795,348,835.16/854,355.76
  6. Step 6: Final answer
    x = 644,690.86

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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.