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Finding the Fourth Proportional to 918,559.32, 1,376,555.94 and 445,119

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Solution

The fourth proportional to 918,559.32, 1,376,555.94 and 445,119 is: 667,056.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    918,559.32 : 1,376,555.94 = 445,119 : x
  2. Step 2: Convert to fraction form
    918,559.32/1,376,555.94 = 445,119/x
  3. Step 3: Cross multiply
    918,559.32x = 1,376,555.94 × 445,119
  4. Step 4: Simplify right side
    918,559.32x = 612,731,203,456.86
  5. Step 5: Solve for x
    x = 612,731,203,456.86/918,559.32
  6. Step 6: Final answer
    x = 667,056.76

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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.