Home / 1,189,638.88-1,641,705.09-645,774.91

Finding the Fourth Proportional to 1,189,638.88, 1,641,705.09 and 645,774.91

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Solution

The fourth proportional to 1,189,638.88, 1,641,705.09 and 645,774.91 is: 891,171.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,638.88 : 1,641,705.09 = 645,774.91 : x
  2. Step 2: Convert to fraction form
    1,189,638.88/1,641,705.09 = 645,774.91/x
  3. Step 3: Cross multiply
    1,189,638.88x = 1,641,705.09 × 645,774.91
  4. Step 4: Simplify right side
    1,189,638.88x = 1,060,171,956,741.29
  5. Step 5: Solve for x
    x = 1,060,171,956,741.29/1,189,638.88
  6. Step 6: Final answer
    x = 891,171.24

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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.