Home / 1,287,591.84-1,777,203.36-879,858.72

Finding the Fourth Proportional to 1,287,591.84, 1,777,203.36 and 879,858.72

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Solution

The fourth proportional to 1,287,591.84, 1,777,203.36 and 879,858.72 is: 1,214,428.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,591.84 : 1,777,203.36 = 879,858.72 : x
  2. Step 2: Convert to fraction form
    1,287,591.84/1,777,203.36 = 879,858.72/x
  3. Step 3: Cross multiply
    1,287,591.84x = 1,777,203.36 × 879,858.72
  4. Step 4: Simplify right side
    1,287,591.84x = 1,563,687,873,509.30
  5. Step 5: Solve for x
    x = 1,563,687,873,509.30/1,287,591.84
  6. Step 6: Final answer
    x = 1,214,428.23

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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.