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Finding the Fourth Proportional to 485,613.40, 728,420.10 and 296,656.60

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Solution

The fourth proportional to 485,613.40, 728,420.10 and 296,656.60 is: 444,984.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,613.40 : 728,420.10 = 296,656.60 : x
  2. Step 2: Convert to fraction form
    485,613.40/728,420.10 = 296,656.60/x
  3. Step 3: Cross multiply
    485,613.40x = 728,420.10 × 296,656.60
  4. Step 4: Simplify right side
    485,613.40x = 216,090,630,237.66
  5. Step 5: Solve for x
    x = 216,090,630,237.66/485,613.40
  6. Step 6: Final answer
    x = 444,984.90

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Similar ratio
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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.