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Finding the Fourth Proportional to 1,664,596.88, 2,495,845.56 and 917,167.76

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Solution

The fourth proportional to 1,664,596.88, 2,495,845.56 and 917,167.76 is: 1,375,173.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,664,596.88 : 2,495,845.56 = 917,167.76 : x
  2. Step 2: Convert to fraction form
    1,664,596.88/2,495,845.56 = 917,167.76/x
  3. Step 3: Cross multiply
    1,664,596.88x = 2,495,845.56 × 917,167.76
  4. Step 4: Simplify right side
    1,664,596.88x = 2,289,109,081,571.15
  5. Step 5: Solve for x
    x = 2,289,109,081,571.15/1,664,596.88
  6. Step 6: Final answer
    x = 1,375,173.24

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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.