Home / 1,287,539.12-1,776,770.16-714,564.56

Finding the Fourth Proportional to 1,287,539.12, 1,776,770.16 and 714,564.56

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Solution

The fourth proportional to 1,287,539.12, 1,776,770.16 and 714,564.56 is: 986,080.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,539.12 : 1,776,770.16 = 714,564.56 : x
  2. Step 2: Convert to fraction form
    1,287,539.12/1,776,770.16 = 714,564.56/x
  3. Step 3: Cross multiply
    1,287,539.12x = 1,776,770.16 × 714,564.56
  4. Step 4: Simplify right side
    1,287,539.12x = 1,269,616,987,601.53
  5. Step 5: Solve for x
    x = 1,269,616,987,601.53/1,287,539.12
  6. Step 6: Final answer
    x = 986,080.32

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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.