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Finding the Fourth Proportional to 945,775.10, 1,418,662.65 and 858,683.90

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Solution

The fourth proportional to 945,775.10, 1,418,662.65 and 858,683.90 is: 1,288,025.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    945,775.10 : 1,418,662.65 = 858,683.90 : x
  2. Step 2: Convert to fraction form
    945,775.10/1,418,662.65 = 858,683.90/x
  3. Step 3: Cross multiply
    945,775.10x = 1,418,662.65 × 858,683.90
  4. Step 4: Simplify right side
    945,775.10x = 1,218,182,777,086.34
  5. Step 5: Solve for x
    x = 1,218,182,777,086.34/945,775.10
  6. Step 6: Final answer
    x = 1,288,025.85

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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.