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Finding the Fourth Proportional to 938,803.60, 1,405,872.60 and 752,179.60

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Solution

The fourth proportional to 938,803.60, 1,405,872.60 and 752,179.60 is: 1,126,400.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    938,803.60 : 1,405,872.60 = 752,179.60 : x
  2. Step 2: Convert to fraction form
    938,803.60/1,405,872.60 = 752,179.60/x
  3. Step 3: Cross multiply
    938,803.60x = 1,405,872.60 × 752,179.60
  4. Step 4: Simplify right side
    938,803.60x = 1,057,468,689,918.96
  5. Step 5: Solve for x
    x = 1,057,468,689,918.96/938,803.60
  6. Step 6: Final answer
    x = 1,126,400.34

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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.