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Finding the Fourth Proportional to 1,188,637.60, 1,784,268.60 and 739,865.20

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Solution

The fourth proportional to 1,188,637.60, 1,784,268.60 and 739,865.20 is: 1,110,614.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,188,637.60 : 1,784,268.60 = 739,865.20 : x
  2. Step 2: Convert to fraction form
    1,188,637.60/1,784,268.60 = 739,865.20/x
  3. Step 3: Cross multiply
    1,188,637.60x = 1,784,268.60 × 739,865.20
  4. Step 4: Simplify right side
    1,188,637.60x = 1,320,118,244,592.72
  5. Step 5: Solve for x
    x = 1,320,118,244,592.72/1,188,637.60
  6. Step 6: Final answer
    x = 1,110,614.58

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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.