Home / 920,469-1,270,245.87-512,606.55

Finding the Fourth Proportional to 920,469, 1,270,245.87 and 512,606.55

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Solution

The fourth proportional to 920,469, 1,270,245.87 and 512,606.55 is: 707,396.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    920,469 : 1,270,245.87 = 512,606.55 : x
  2. Step 2: Convert to fraction form
    920,469/1,270,245.87 = 512,606.55/x
  3. Step 3: Cross multiply
    920,469x = 1,270,245.87 × 512,606.55
  4. Step 4: Simplify right side
    920,469x = 651,136,353,072.45
  5. Step 5: Solve for x
    x = 651,136,353,072.45/920,469
  6. Step 6: Final answer
    x = 707,396.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.