Home / 427,972.80-641,344.80-314,769.60

Finding the Fourth Proportional to 427,972.80, 641,344.80 and 314,769.60

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Solution

The fourth proportional to 427,972.80, 641,344.80 and 314,769.60 is: 471,702.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,972.80 : 641,344.80 = 314,769.60 : x
  2. Step 2: Convert to fraction form
    427,972.80/641,344.80 = 314,769.60/x
  3. Step 3: Cross multiply
    427,972.80x = 641,344.80 × 314,769.60
  4. Step 4: Simplify right side
    427,972.80x = 201,875,846,158.08
  5. Step 5: Solve for x
    x = 201,875,846,158.08/427,972.80
  6. Step 6: Final answer
    x = 471,702.52

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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.