Home / 1,287,611.40-1,776,986.76-714,651.60

Finding the Fourth Proportional to 1,287,611.40, 1,776,986.76 and 714,651.60

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Solution

The fourth proportional to 1,287,611.40, 1,776,986.76 and 714,651.60 is: 986,265.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,611.40 : 1,776,986.76 = 714,651.60 : x
  2. Step 2: Convert to fraction form
    1,287,611.40/1,776,986.76 = 714,651.60/x
  3. Step 3: Cross multiply
    1,287,611.40x = 1,776,986.76 × 714,651.60
  4. Step 4: Simplify right side
    1,287,611.40x = 1,269,926,431,212.82
  5. Step 5: Solve for x
    x = 1,269,926,431,212.82/1,287,611.40
  6. Step 6: Final answer
    x = 986,265.29

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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.