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Finding the Fourth Proportional to 689,009.40, 950,783.58 and 378,933.82

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Solution

The fourth proportional to 689,009.40, 950,783.58 and 378,933.82 is: 522,901.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    689,009.40 : 950,783.58 = 378,933.82 : x
  2. Step 2: Convert to fraction form
    689,009.40/950,783.58 = 378,933.82/x
  3. Step 3: Cross multiply
    689,009.40x = 950,783.58 × 378,933.82
  4. Step 4: Simplify right side
    689,009.40x = 360,284,051,585.72
  5. Step 5: Solve for x
    x = 360,284,051,585.72/689,009.40
  6. Step 6: Final answer
    x = 522,901.50

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.