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Finding the Fourth Proportional to 617,160.72, 851,760.56 and 345,243.72

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Solution

The fourth proportional to 617,160.72, 851,760.56 and 345,243.72 is: 476,480.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,160.72 : 851,760.56 = 345,243.72 : x
  2. Step 2: Convert to fraction form
    617,160.72/851,760.56 = 345,243.72/x
  3. Step 3: Cross multiply
    617,160.72x = 851,760.56 × 345,243.72
  4. Step 4: Simplify right side
    617,160.72x = 294,064,984,283.68
  5. Step 5: Solve for x
    x = 294,064,984,283.68/617,160.72
  6. Step 6: Final answer
    x = 476,480.40

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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.