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Finding the Fourth Proportional to 485,070.60, 727,605.90 and 415,086.60

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Solution

The fourth proportional to 485,070.60, 727,605.90 and 415,086.60 is: 622,629.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,070.60 : 727,605.90 = 415,086.60 : x
  2. Step 2: Convert to fraction form
    485,070.60/727,605.90 = 415,086.60/x
  3. Step 3: Cross multiply
    485,070.60x = 727,605.90 × 415,086.60
  4. Step 4: Simplify right side
    485,070.60x = 302,019,459,170.94
  5. Step 5: Solve for x
    x = 302,019,459,170.94/485,070.60
  6. Step 6: Final answer
    x = 622,629.90

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Similar ratio
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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.