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Finding the Fourth Proportional to 476,068.80, 712,936.80 and 317,438.40

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Solution

The fourth proportional to 476,068.80, 712,936.80 and 317,438.40 is: 475,379.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,068.80 : 712,936.80 = 317,438.40 : x
  2. Step 2: Convert to fraction form
    476,068.80/712,936.80 = 317,438.40/x
  3. Step 3: Cross multiply
    476,068.80x = 712,936.80 × 317,438.40
  4. Step 4: Simplify right side
    476,068.80x = 226,313,517,093.12
  5. Step 5: Solve for x
    x = 226,313,517,093.12/476,068.80
  6. Step 6: Final answer
    x = 475,379.85

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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.