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Finding the Fourth Proportional to 1,157,891.60, 1,738,392.60 and 739,024.40

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Solution

The fourth proportional to 1,157,891.60, 1,738,392.60 and 739,024.40 is: 1,109,529.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,157,891.60 : 1,738,392.60 = 739,024.40 : x
  2. Step 2: Convert to fraction form
    1,157,891.60/1,738,392.60 = 739,024.40/x
  3. Step 3: Cross multiply
    1,157,891.60x = 1,738,392.60 × 739,024.40
  4. Step 4: Simplify right side
    1,157,891.60x = 1,284,714,548,179.44
  5. Step 5: Solve for x
    x = 1,284,714,548,179.44/1,157,891.60
  6. Step 6: Final answer
    x = 1,109,529.21

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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.