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Finding the Fourth Proportional to 855,905.60, 1,282,629.60 and 629,499.20

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Solution

The fourth proportional to 855,905.60, 1,282,629.60 and 629,499.20 is: 943,345.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    855,905.60 : 1,282,629.60 = 629,499.20 : x
  2. Step 2: Convert to fraction form
    855,905.60/1,282,629.60 = 629,499.20/x
  3. Step 3: Cross multiply
    855,905.60x = 1,282,629.60 × 629,499.20
  4. Step 4: Simplify right side
    855,905.60x = 807,414,307,096.32
  5. Step 5: Solve for x
    x = 807,414,307,096.32/855,905.60
  6. Step 6: Final answer
    x = 943,345.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.