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Finding the Fourth Proportional to 980,773.14, 1,354,070.76 and 777,644.58

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Solution

The fourth proportional to 980,773.14, 1,354,070.76 and 777,644.58 is: 1,073,628.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    980,773.14 : 1,354,070.76 = 777,644.58 : x
  2. Step 2: Convert to fraction form
    980,773.14/1,354,070.76 = 777,644.58/x
  3. Step 3: Cross multiply
    980,773.14x = 1,354,070.76 × 777,644.58
  4. Step 4: Simplify right side
    980,773.14x = 1,052,985,787,450.48
  5. Step 5: Solve for x
    x = 1,052,985,787,450.48/980,773.14
  6. Step 6: Final answer
    x = 1,073,628.29

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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.