Home / 1,189,521.05-1,641,512.99-645,657.89

Finding the Fourth Proportional to 1,189,521.05, 1,641,512.99 and 645,657.89

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Solution

The fourth proportional to 1,189,521.05, 1,641,512.99 and 645,657.89 is: 890,993.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,189,521.05 : 1,641,512.99 = 645,657.89 : x
  2. Step 2: Convert to fraction form
    1,189,521.05/1,641,512.99 = 645,657.89/x
  3. Step 3: Cross multiply
    1,189,521.05x = 1,641,512.99 × 645,657.89
  4. Step 4: Simplify right side
    1,189,521.05x = 1,059,855,806,937.57
  5. Step 5: Solve for x
    x = 1,059,855,806,937.57/1,189,521.05
  6. Step 6: Final answer
    x = 890,993.74

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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.