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Finding the Fourth Proportional to 1,354,743.57, 1,869,750.51 and 864,922.38

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Solution

The fourth proportional to 1,354,743.57, 1,869,750.51 and 864,922.38 is: 1,193,723.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,354,743.57 : 1,869,750.51 = 864,922.38 : x
  2. Step 2: Convert to fraction form
    1,354,743.57/1,869,750.51 = 864,922.38/x
  3. Step 3: Cross multiply
    1,354,743.57x = 1,869,750.51 × 864,922.38
  4. Step 4: Simplify right side
    1,354,743.57x = 1,617,189,061,115.41
  5. Step 5: Solve for x
    x = 1,617,189,061,115.41/1,354,743.57
  6. Step 6: Final answer
    x = 1,193,723.37

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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.