Home / 869,745.08-1,200,256.90-487,763.66

Finding the Fourth Proportional to 869,745.08, 1,200,256.90 and 487,763.66

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Solution

The fourth proportional to 869,745.08, 1,200,256.90 and 487,763.66 is: 673,118.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    869,745.08 : 1,200,256.90 = 487,763.66 : x
  2. Step 2: Convert to fraction form
    869,745.08/1,200,256.90 = 487,763.66/x
  3. Step 3: Cross multiply
    869,745.08x = 1,200,256.90 × 487,763.66
  4. Step 4: Simplify right side
    869,745.08x = 585,441,691,263.56
  5. Step 5: Solve for x
    x = 585,441,691,263.56/869,745.08
  6. Step 6: Final answer
    x = 673,118.72

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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.