Home / 727,450.12-1,003,912.32-405,160.30

Finding the Fourth Proportional to 727,450.12, 1,003,912.32 and 405,160.30

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Solution

The fourth proportional to 727,450.12, 1,003,912.32 and 405,160.30 is: 559,138.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    727,450.12 : 1,003,912.32 = 405,160.30 : x
  2. Step 2: Convert to fraction form
    727,450.12/1,003,912.32 = 405,160.30/x
  3. Step 3: Cross multiply
    727,450.12x = 1,003,912.32 × 405,160.30
  4. Step 4: Simplify right side
    727,450.12x = 406,745,416,744.90
  5. Step 5: Solve for x
    x = 406,745,416,744.90/727,450.12
  6. Step 6: Final answer
    x = 559,138.57

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1.5x scale

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.