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Finding the Fourth Proportional to 476,139.20, 713,431.20 and 409,265.60

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Solution

The fourth proportional to 476,139.20, 713,431.20 and 409,265.60 is: 613,230.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,139.20 : 713,431.20 = 409,265.60 : x
  2. Step 2: Convert to fraction form
    476,139.20/713,431.20 = 409,265.60/x
  3. Step 3: Cross multiply
    476,139.20x = 713,431.20 × 409,265.60
  4. Step 4: Simplify right side
    476,139.20x = 291,982,848,126.72
  5. Step 5: Solve for x
    x = 291,982,848,126.72/476,139.20
  6. Step 6: Final answer
    x = 613,230.01

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1.5x scale

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.