Home / 1,587,992.57-2,191,443.11-862,840.30

Finding the Fourth Proportional to 1,587,992.57, 2,191,443.11 and 862,840.30

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Solution

The fourth proportional to 1,587,992.57, 2,191,443.11 and 862,840.30 is: 1,190,726.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,587,992.57 : 2,191,443.11 = 862,840.30 : x
  2. Step 2: Convert to fraction form
    1,587,992.57/2,191,443.11 = 862,840.30/x
  3. Step 3: Cross multiply
    1,587,992.57x = 2,191,443.11 × 862,840.30
  4. Step 4: Simplify right side
    1,587,992.57x = 1,890,865,430,465.33
  5. Step 5: Solve for x
    x = 1,890,865,430,465.33/1,587,992.57
  6. Step 6: Final answer
    x = 1,190,726.88

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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.