Home / 1,287,938.22-1,777,265.70-714,933.30

Finding the Fourth Proportional to 1,287,938.22, 1,777,265.70 and 714,933.30

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Solution

The fourth proportional to 1,287,938.22, 1,777,265.70 and 714,933.30 is: 986,558.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,938.22 : 1,777,265.70 = 714,933.30 : x
  2. Step 2: Convert to fraction form
    1,287,938.22/1,777,265.70 = 714,933.30/x
  3. Step 3: Cross multiply
    1,287,938.22x = 1,777,265.70 × 714,933.30
  4. Step 4: Simplify right side
    1,287,938.22x = 1,270,626,431,877.81
  5. Step 5: Solve for x
    x = 1,270,626,431,877.81/1,287,938.22
  6. Step 6: Final answer
    x = 986,558.53

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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.