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Finding the Fourth Proportional to 862,710.94, 1,294,019.32 and 263,671.90

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Solution

The fourth proportional to 862,710.94, 1,294,019.32 and 263,671.90 is: 395,493.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    862,710.94 : 1,294,019.32 = 263,671.90 : x
  2. Step 2: Convert to fraction form
    862,710.94/1,294,019.32 = 263,671.90/x
  3. Step 3: Cross multiply
    862,710.94x = 1,294,019.32 × 263,671.90
  4. Step 4: Simplify right side
    862,710.94x = 341,196,532,741.11
  5. Step 5: Solve for x
    x = 341,196,532,741.11/862,710.94
  6. Step 6: Final answer
    x = 395,493.46

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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.