Home / 1,287,690.35-1,777,095.86-743,849.06

Finding the Fourth Proportional to 1,287,690.35, 1,777,095.86 and 743,849.06

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Solution

The fourth proportional to 1,287,690.35, 1,777,095.86 and 743,849.06 is: 1,026,559.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,287,690.35 : 1,777,095.86 = 743,849.06 : x
  2. Step 2: Convert to fraction form
    1,287,690.35/1,777,095.86 = 743,849.06/x
  3. Step 3: Cross multiply
    1,287,690.35x = 1,777,095.86 × 743,849.06
  4. Step 4: Simplify right side
    1,287,690.35x = 1,321,891,072,386.17
  5. Step 5: Solve for x
    x = 1,321,891,072,386.17/1,287,690.35
  6. Step 6: Final answer
    x = 1,026,559.75

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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.