Home / 718,748.80-1,078,123.20-220,112.80

Finding the Fourth Proportional to 718,748.80, 1,078,123.20 and 220,112.80

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Solution

The fourth proportional to 718,748.80, 1,078,123.20 and 220,112.80 is: 330,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,748.80 : 1,078,123.20 = 220,112.80 : x
  2. Step 2: Convert to fraction form
    718,748.80/1,078,123.20 = 220,112.80/x
  3. Step 3: Cross multiply
    718,748.80x = 1,078,123.20 × 220,112.80
  4. Step 4: Simplify right side
    718,748.80x = 237,308,716,296.96
  5. Step 5: Solve for x
    x = 237,308,716,296.96/718,748.80
  6. Step 6: Final answer
    x = 330,169.20

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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.