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Finding the Fourth Proportional to 671,905.40, 927,221.52 and 365,980.84

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Solution

The fourth proportional to 671,905.40, 927,221.52 and 365,980.84 is: 505,049.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,905.40 : 927,221.52 = 365,980.84 : x
  2. Step 2: Convert to fraction form
    671,905.40/927,221.52 = 365,980.84/x
  3. Step 3: Cross multiply
    671,905.40x = 927,221.52 × 365,980.84
  4. Step 4: Simplify right side
    671,905.40x = 339,345,310,755.68
  5. Step 5: Solve for x
    x = 339,345,310,755.68/671,905.40
  6. Step 6: Final answer
    x = 505,049.24

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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.