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Finding the Fourth Proportional to 481,808.70, 722,713.05 and 432,042.30

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Solution

The fourth proportional to 481,808.70, 722,713.05 and 432,042.30 is: 648,063.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,808.70 : 722,713.05 = 432,042.30 : x
  2. Step 2: Convert to fraction form
    481,808.70/722,713.05 = 432,042.30/x
  3. Step 3: Cross multiply
    481,808.70x = 722,713.05 × 432,042.30
  4. Step 4: Simplify right side
    481,808.70x = 312,242,608,362.02
  5. Step 5: Solve for x
    x = 312,242,608,362.02/481,808.70
  6. Step 6: Final answer
    x = 648,063.45

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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.