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Finding the Fourth Proportional to 1,271,727.42, 1,754,978.85 and 727,861.02

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Solution

The fourth proportional to 1,271,727.42, 1,754,978.85 and 727,861.02 is: 1,004,445.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,271,727.42 : 1,754,978.85 = 727,861.02 : x
  2. Step 2: Convert to fraction form
    1,271,727.42/1,754,978.85 = 727,861.02/x
  3. Step 3: Cross multiply
    1,271,727.42x = 1,754,978.85 × 727,861.02
  4. Step 4: Simplify right side
    1,271,727.42x = 1,277,380,695,839.43
  5. Step 5: Solve for x
    x = 1,277,380,695,839.43/1,271,727.42
  6. Step 6: Final answer
    x = 1,004,445.35

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.