Home / 1,189,539.15-1,641,520.12-645,663.44

Finding the Fourth Proportional to 1,189,539.15, 1,641,520.12 and 645,663.44

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Solution

The fourth proportional to 1,189,539.15, 1,641,520.12 and 645,663.44 is: 890,991.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,539.15 : 1,641,520.12 = 645,663.44 : x
  2. Step 2: Convert to fraction form
    1,189,539.15/1,641,520.12 = 645,663.44/x
  3. Step 3: Cross multiply
    1,189,539.15x = 1,641,520.12 × 645,663.44
  4. Step 4: Simplify right side
    1,189,539.15x = 1,059,869,527,508.41
  5. Step 5: Solve for x
    x = 1,059,869,527,508.41/1,189,539.15
  6. Step 6: Final answer
    x = 890,991.72

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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.