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Finding the Fourth Proportional to 485,459.40, 728,189.10 and 296,502.60

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Solution

The fourth proportional to 485,459.40, 728,189.10 and 296,502.60 is: 444,753.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,459.40 : 728,189.10 = 296,502.60 : x
  2. Step 2: Convert to fraction form
    485,459.40/728,189.10 = 296,502.60/x
  3. Step 3: Cross multiply
    485,459.40x = 728,189.10 × 296,502.60
  4. Step 4: Simplify right side
    485,459.40x = 215,909,961,441.66
  5. Step 5: Solve for x
    x = 215,909,961,441.66/485,459.40
  6. Step 6: Final answer
    x = 444,753.90

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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.