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Finding the Fourth Proportional to 392,673.69, 587,779.74 and 270,380.70

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Solution

The fourth proportional to 392,673.69, 587,779.74 and 270,380.70 is: 404,723.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,673.69 : 587,779.74 = 270,380.70 : x
  2. Step 2: Convert to fraction form
    392,673.69/587,779.74 = 270,380.70/x
  3. Step 3: Cross multiply
    392,673.69x = 587,779.74 × 270,380.70
  4. Step 4: Simplify right side
    392,673.69x = 158,924,297,547.02
  5. Step 5: Solve for x
    x = 158,924,297,547.02/392,673.69
  6. Step 6: Final answer
    x = 404,723.57

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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.