Home / 1,287,605.79-1,777,115.90-743,643.81

Finding the Fourth Proportional to 1,287,605.79, 1,777,115.90 and 743,643.81

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Solution

The fourth proportional to 1,287,605.79, 1,777,115.90 and 743,643.81 is: 1,026,355.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,605.79 : 1,777,115.90 = 743,643.81 : x
  2. Step 2: Convert to fraction form
    1,287,605.79/1,777,115.90 = 743,643.81/x
  3. Step 3: Cross multiply
    1,287,605.79x = 1,777,115.90 × 743,643.81
  4. Step 4: Simplify right side
    1,287,605.79x = 1,321,541,238,687.58
  5. Step 5: Solve for x
    x = 1,321,541,238,687.58/1,287,605.79
  6. Step 6: Final answer
    x = 1,026,355.46

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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.