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Finding the Fourth Proportional to 476,485.80, 657,584.91 and 315,060.90

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Solution

The fourth proportional to 476,485.80, 657,584.91 and 315,060.90 is: 434,806.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,485.80 : 657,584.91 = 315,060.90 : x
  2. Step 2: Convert to fraction form
    476,485.80/657,584.91 = 315,060.90/x
  3. Step 3: Cross multiply
    476,485.80x = 657,584.91 × 315,060.90
  4. Step 4: Simplify right side
    476,485.80x = 207,179,293,571.02
  5. Step 5: Solve for x
    x = 207,179,293,571.02/476,485.80
  6. Step 6: Final answer
    x = 434,806.86

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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.