Home / 811,845.69-1,120,349.23-449,294.55

Finding the Fourth Proportional to 811,845.69, 1,120,349.23 and 449,294.55

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Solution

The fourth proportional to 811,845.69, 1,120,349.23 and 449,294.55 is: 620,027.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,845.69 : 1,120,349.23 = 449,294.55 : x
  2. Step 2: Convert to fraction form
    811,845.69/1,120,349.23 = 449,294.55/x
  3. Step 3: Cross multiply
    811,845.69x = 1,120,349.23 × 449,294.55
  4. Step 4: Simplify right side
    811,845.69x = 503,366,803,135.70
  5. Step 5: Solve for x
    x = 503,366,803,135.70/811,845.69
  6. Step 6: Final answer
    x = 620,027.68

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1.5x scale

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.