Home / 717,635.80-1,076,453.70-218,999.80

Finding the Fourth Proportional to 717,635.80, 1,076,453.70 and 218,999.80

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Solution

The fourth proportional to 717,635.80, 1,076,453.70 and 218,999.80 is: 328,499.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    717,635.80 : 1,076,453.70 = 218,999.80 : x
  2. Step 2: Convert to fraction form
    717,635.80/1,076,453.70 = 218,999.80/x
  3. Step 3: Cross multiply
    717,635.80x = 1,076,453.70 × 218,999.80
  4. Step 4: Simplify right side
    717,635.80x = 235,743,145,009.26
  5. Step 5: Solve for x
    x = 235,743,145,009.26/717,635.80
  6. Step 6: Final answer
    x = 328,499.70

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