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Finding the Fourth Proportional to 881,446.20, 1,323,773.10 and 771,221.40

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Solution

The fourth proportional to 881,446.20, 1,323,773.10 and 771,221.40 is: 1,158,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    881,446.20 : 1,323,773.10 = 771,221.40 : x
  2. Step 2: Convert to fraction form
    881,446.20/1,323,773.10 = 771,221.40/x
  3. Step 3: Cross multiply
    881,446.20x = 1,323,773.10 × 771,221.40
  4. Step 4: Simplify right side
    881,446.20x = 1,020,922,143,464.34
  5. Step 5: Solve for x
    x = 1,020,922,143,464.34/881,446.20
  6. Step 6: Final answer
    x = 1,158,235.34

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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.