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Finding the Fourth Proportional to 1,252,867.60, 1,728,942.42 and 736,954.30

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Solution

The fourth proportional to 1,252,867.60, 1,728,942.42 and 736,954.30 is: 1,016,988.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,252,867.60 : 1,728,942.42 = 736,954.30 : x
  2. Step 2: Convert to fraction form
    1,252,867.60/1,728,942.42 = 736,954.30/x
  3. Step 3: Cross multiply
    1,252,867.60x = 1,728,942.42 × 736,954.30
  4. Step 4: Simplify right side
    1,252,867.60x = 1,274,151,551,650.80
  5. Step 5: Solve for x
    x = 1,274,151,551,650.80/1,252,867.60
  6. Step 6: Final answer
    x = 1,016,988.19

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Why These Related Problems?

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