Home / 919,785.07-1,269,331.61-511,909.57

Finding the Fourth Proportional to 919,785.07, 1,269,331.61 and 511,909.57

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Solution

The fourth proportional to 919,785.07, 1,269,331.61 and 511,909.57 is: 706,450.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,785.07 : 1,269,331.61 = 511,909.57 : x
  2. Step 2: Convert to fraction form
    919,785.07/1,269,331.61 = 511,909.57/x
  3. Step 3: Cross multiply
    919,785.07x = 1,269,331.61 × 511,909.57
  4. Step 4: Simplify right side
    919,785.07x = 649,783,000,569.12
  5. Step 5: Solve for x
    x = 649,783,000,569.12/919,785.07
  6. Step 6: Final answer
    x = 706,450.91

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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.