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Finding the Fourth Proportional to 667,210.37, 920,816.24 and 380,773.51

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Solution

The fourth proportional to 667,210.37, 920,816.24 and 380,773.51 is: 525,505.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    667,210.37 : 920,816.24 = 380,773.51 : x
  2. Step 2: Convert to fraction form
    667,210.37/920,816.24 = 380,773.51/x
  3. Step 3: Cross multiply
    667,210.37x = 920,816.24 × 380,773.51
  4. Step 4: Simplify right side
    667,210.37x = 350,622,427,563.89
  5. Step 5: Solve for x
    x = 350,622,427,563.89/667,210.37
  6. Step 6: Final answer
    x = 525,505.07

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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.