Home / 1,297,906.65-1,791,100.40-717,127.92

Finding the Fourth Proportional to 1,297,906.65, 1,791,100.40 and 717,127.92

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Solution

The fourth proportional to 1,297,906.65, 1,791,100.40 and 717,127.92 is: 989,630.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,297,906.65 : 1,791,100.40 = 717,127.92 : x
  2. Step 2: Convert to fraction form
    1,297,906.65/1,791,100.40 = 717,127.92/x
  3. Step 3: Cross multiply
    1,297,906.65x = 1,791,100.40 × 717,127.92
  4. Step 4: Simplify right side
    1,297,906.65x = 1,284,448,100,777.53
  5. Step 5: Solve for x
    x = 1,284,448,100,777.53/1,297,906.65
  6. Step 6: Final answer
    x = 989,630.57

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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.