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Finding the Fourth Proportional to 485,872.40, 728,808.60 and 456,323.60

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Solution

The fourth proportional to 485,872.40, 728,808.60 and 456,323.60 is: 684,485.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,872.40 : 728,808.60 = 456,323.60 : x
  2. Step 2: Convert to fraction form
    485,872.40/728,808.60 = 456,323.60/x
  3. Step 3: Cross multiply
    485,872.40x = 728,808.60 × 456,323.60
  4. Step 4: Simplify right side
    485,872.40x = 332,572,564,062.96
  5. Step 5: Solve for x
    x = 332,572,564,062.96/485,872.40
  6. Step 6: Final answer
    x = 684,485.40

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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.