Home / 645,195.88-890,467.20-464,505.88

Finding the Fourth Proportional to 645,195.88, 890,467.20 and 464,505.88

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Solution

The fourth proportional to 645,195.88, 890,467.20 and 464,505.88 is: 641,087.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,195.88 : 890,467.20 = 464,505.88 : x
  2. Step 2: Convert to fraction form
    645,195.88/890,467.20 = 464,505.88/x
  3. Step 3: Cross multiply
    645,195.88x = 890,467.20 × 464,505.88
  4. Step 4: Simplify right side
    645,195.88x = 413,627,250,347.14
  5. Step 5: Solve for x
    x = 413,627,250,347.14/645,195.88
  6. Step 6: Final answer
    x = 641,087.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.