Home / 919,133.15-1,268,373.30-511,223.45

Finding the Fourth Proportional to 919,133.15, 1,268,373.30 and 511,223.45

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Solution

The fourth proportional to 919,133.15, 1,268,373.30 and 511,223.45 is: 705,471.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,133.15 : 1,268,373.30 = 511,223.45 : x
  2. Step 2: Convert to fraction form
    919,133.15/1,268,373.30 = 511,223.45/x
  3. Step 3: Cross multiply
    919,133.15x = 1,268,373.30 × 511,223.45
  4. Step 4: Simplify right side
    919,133.15x = 648,422,174,313.89
  5. Step 5: Solve for x
    x = 648,422,174,313.89/919,133.15
  6. Step 6: Final answer
    x = 705,471.43

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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.