Home / 1,266,243.20-1,899,364.80-379,779.20

Finding the Fourth Proportional to 1,266,243.20, 1,899,364.80 and 379,779.20

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Solution

The fourth proportional to 1,266,243.20, 1,899,364.80 and 379,779.20 is: 569,668.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,266,243.20 : 1,899,364.80 = 379,779.20 : x
  2. Step 2: Convert to fraction form
    1,266,243.20/1,899,364.80 = 379,779.20/x
  3. Step 3: Cross multiply
    1,266,243.20x = 1,899,364.80 × 379,779.20
  4. Step 4: Simplify right side
    1,266,243.20x = 721,339,244,252.16
  5. Step 5: Solve for x
    x = 721,339,244,252.16/1,266,243.20
  6. Step 6: Final answer
    x = 569,668.80

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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.