Home / 711,816.72-982,240.20-481,906.32

Finding the Fourth Proportional to 711,816.72, 982,240.20 and 481,906.32

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Solution

The fourth proportional to 711,816.72, 982,240.20 and 481,906.32 is: 664,985.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    711,816.72 : 982,240.20 = 481,906.32 : x
  2. Step 2: Convert to fraction form
    711,816.72/982,240.20 = 481,906.32/x
  3. Step 3: Cross multiply
    711,816.72x = 982,240.20 × 481,906.32
  4. Step 4: Simplify right side
    711,816.72x = 473,347,760,138.06
  5. Step 5: Solve for x
    x = 473,347,760,138.06/711,816.72
  6. Step 6: Final answer
    x = 664,985.45

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.