Home / 1,287,824.87-1,777,109.42-714,819.94

Finding the Fourth Proportional to 1,287,824.87, 1,777,109.42 and 714,819.94

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Solution

The fourth proportional to 1,287,824.87, 1,777,109.42 and 714,819.94 is: 986,402.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,824.87 : 1,777,109.42 = 714,819.94 : x
  2. Step 2: Convert to fraction form
    1,287,824.87/1,777,109.42 = 714,819.94/x
  3. Step 3: Cross multiply
    1,287,824.87x = 1,777,109.42 × 714,819.94
  4. Step 4: Simplify right side
    1,287,824.87x = 1,270,313,246,322.11
  5. Step 5: Solve for x
    x = 1,270,313,246,322.11/1,287,824.87
  6. Step 6: Final answer
    x = 986,402.17

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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.