Home / 1,231,492.10-1,699,487.94-687,609.50

Finding the Fourth Proportional to 1,231,492.10, 1,699,487.94 and 687,609.50

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Solution

The fourth proportional to 1,231,492.10, 1,699,487.94 and 687,609.50 is: 948,917.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,231,492.10 : 1,699,487.94 = 687,609.50 : x
  2. Step 2: Convert to fraction form
    1,231,492.10/1,699,487.94 = 687,609.50/x
  3. Step 3: Cross multiply
    1,231,492.10x = 1,699,487.94 × 687,609.50
  4. Step 4: Simplify right side
    1,231,492.10x = 1,168,584,052,679.43
  5. Step 5: Solve for x
    x = 1,168,584,052,679.43/1,231,492.10
  6. Step 6: Final answer
    x = 948,917.21

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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.