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Finding the Fourth Proportional to 483,623.60, 725,435.40 and 431,092.40

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Solution

The fourth proportional to 483,623.60, 725,435.40 and 431,092.40 is: 646,638.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,623.60 : 725,435.40 = 431,092.40 : x
  2. Step 2: Convert to fraction form
    483,623.60/725,435.40 = 431,092.40/x
  3. Step 3: Cross multiply
    483,623.60x = 725,435.40 × 431,092.40
  4. Step 4: Simplify right side
    483,623.60x = 312,729,687,630.96
  5. Step 5: Solve for x
    x = 312,729,687,630.96/483,623.60
  6. Step 6: Final answer
    x = 646,638.60

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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.