Home / 1,288,578.31-1,779,127.68-805,360.66

Finding the Fourth Proportional to 1,288,578.31, 1,779,127.68 and 805,360.66

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Solution

The fourth proportional to 1,288,578.31, 1,779,127.68 and 805,360.66 is: 1,111,953.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,578.31 : 1,779,127.68 = 805,360.66 : x
  2. Step 2: Convert to fraction form
    1,288,578.31/1,779,127.68 = 805,360.66/x
  3. Step 3: Cross multiply
    1,288,578.31x = 1,779,127.68 × 805,360.66
  4. Step 4: Simplify right side
    1,288,578.31x = 1,432,839,442,589.07
  5. Step 5: Solve for x
    x = 1,432,839,442,589.07/1,288,578.31
  6. Step 6: Final answer
    x = 1,111,953.72

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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.