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Finding the Fourth Proportional to 645,885.20, 967,906.20 and 476,080.40

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Solution

The fourth proportional to 645,885.20, 967,906.20 and 476,080.40 is: 713,441.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,885.20 : 967,906.20 = 476,080.40 : x
  2. Step 2: Convert to fraction form
    645,885.20/967,906.20 = 476,080.40/x
  3. Step 3: Cross multiply
    645,885.20x = 967,906.20 × 476,080.40
  4. Step 4: Simplify right side
    645,885.20x = 460,801,170,858.48
  5. Step 5: Solve for x
    x = 460,801,170,858.48/645,885.20
  6. Step 6: Final answer
    x = 713,441.29

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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.