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Finding the Fourth Proportional to 1,107,748.80, 1,661,623.20 and 397,848.60

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Solution

The fourth proportional to 1,107,748.80, 1,661,623.20 and 397,848.60 is: 596,772.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,107,748.80 : 1,661,623.20 = 397,848.60 : x
  2. Step 2: Convert to fraction form
    1,107,748.80/1,661,623.20 = 397,848.60/x
  3. Step 3: Cross multiply
    1,107,748.80x = 1,661,623.20 × 397,848.60
  4. Step 4: Simplify right side
    1,107,748.80x = 661,074,463,847.52
  5. Step 5: Solve for x
    x = 661,074,463,847.52/1,107,748.80
  6. Step 6: Final answer
    x = 596,772.90

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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.