Home / 718,823.10-1,078,234.65-220,122.30

Finding the Fourth Proportional to 718,823.10, 1,078,234.65 and 220,122.30

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Solution

The fourth proportional to 718,823.10, 1,078,234.65 and 220,122.30 is: 330,183.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,823.10 : 1,078,234.65 = 220,122.30 : x
  2. Step 2: Convert to fraction form
    718,823.10/1,078,234.65 = 220,122.30/x
  3. Step 3: Cross multiply
    718,823.10x = 1,078,234.65 × 220,122.30
  4. Step 4: Simplify right side
    718,823.10x = 237,343,491,097.70
  5. Step 5: Solve for x
    x = 237,343,491,097.70/718,823.10
  6. Step 6: Final answer
    x = 330,183.45

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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.