Home / 1,189,451.85-1,641,445.35-645,587.83

Finding the Fourth Proportional to 1,189,451.85, 1,641,445.35 and 645,587.83

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Solution

The fourth proportional to 1,189,451.85, 1,641,445.35 and 645,587.83 is: 890,912.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,451.85 : 1,641,445.35 = 645,587.83 : x
  2. Step 2: Convert to fraction form
    1,189,451.85/1,641,445.35 = 645,587.83/x
  3. Step 3: Cross multiply
    1,189,451.85x = 1,641,445.35 × 645,587.83
  4. Step 4: Simplify right side
    1,189,451.85x = 1,059,697,141,570.09
  5. Step 5: Solve for x
    x = 1,059,697,141,570.09/1,189,451.85
  6. Step 6: Final answer
    x = 890,912.18

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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.