Home / 1,287,540.24-1,776,722.76-714,580.80

Finding the Fourth Proportional to 1,287,540.24, 1,776,722.76 and 714,580.80

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Solution

The fourth proportional to 1,287,540.24, 1,776,722.76 and 714,580.80 is: 986,075.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,540.24 : 1,776,722.76 = 714,580.80 : x
  2. Step 2: Convert to fraction form
    1,287,540.24/1,776,722.76 = 714,580.80/x
  3. Step 3: Cross multiply
    1,287,540.24x = 1,776,722.76 × 714,580.80
  4. Step 4: Simplify right side
    1,287,540.24x = 1,269,611,971,219.01
  5. Step 5: Solve for x
    x = 1,269,611,971,219.01/1,287,540.24
  6. Step 6: Final answer
    x = 986,075.57

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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.