Home / 1,288,579.31-1,779,129.06-805,361.66

Finding the Fourth Proportional to 1,288,579.31, 1,779,129.06 and 805,361.66

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Solution

The fourth proportional to 1,288,579.31, 1,779,129.06 and 805,361.66 is: 1,111,955.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,288,579.31 : 1,779,129.06 = 805,361.66 : x
  2. Step 2: Convert to fraction form
    1,288,579.31/1,779,129.06 = 805,361.66/x
  3. Step 3: Cross multiply
    1,288,579.31x = 1,779,129.06 × 805,361.66
  4. Step 4: Simplify right side
    1,288,579.31x = 1,432,842,333,115.84
  5. Step 5: Solve for x
    x = 1,432,842,333,115.84/1,288,579.31
  6. Step 6: Final answer
    x = 1,111,955.10

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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.