Home / 717,905.80-1,076,858.70-418,724.20

Finding the Fourth Proportional to 717,905.80, 1,076,858.70 and 418,724.20

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Solution

The fourth proportional to 717,905.80, 1,076,858.70 and 418,724.20 is: 628,086.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,905.80 : 1,076,858.70 = 418,724.20 : x
  2. Step 2: Convert to fraction form
    717,905.80/1,076,858.70 = 418,724.20/x
  3. Step 3: Cross multiply
    717,905.80x = 1,076,858.70 × 418,724.20
  4. Step 4: Simplify right side
    717,905.80x = 450,906,797,670.54
  5. Step 5: Solve for x
    x = 450,906,797,670.54/717,905.80
  6. Step 6: Final answer
    x = 628,086.30

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.