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Finding the Fourth Proportional to 656,933.64, 985,435.64 and 207,620.32

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Solution

The fourth proportional to 656,933.64, 985,435.64 and 207,620.32 is: 311,441.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    656,933.64 : 985,435.64 = 207,620.32 : x
  2. Step 2: Convert to fraction form
    656,933.64/985,435.64 = 207,620.32/x
  3. Step 3: Cross multiply
    656,933.64x = 985,435.64 × 207,620.32
  4. Step 4: Simplify right side
    656,933.64x = 204,596,462,916.21
  5. Step 5: Solve for x
    x = 204,596,462,916.21/656,933.64
  6. Step 6: Final answer
    x = 311,441.60

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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.