Home / 811,938.99-1,120,467.56-449,363.55

Finding the Fourth Proportional to 811,938.99, 1,120,467.56 and 449,363.55

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Solution

The fourth proportional to 811,938.99, 1,120,467.56 and 449,363.55 is: 620,117.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,938.99 : 1,120,467.56 = 449,363.55 : x
  2. Step 2: Convert to fraction form
    811,938.99/1,120,467.56 = 449,363.55/x
  3. Step 3: Cross multiply
    811,938.99x = 1,120,467.56 × 449,363.55
  4. Step 4: Simplify right side
    811,938.99x = 503,497,278,174.62
  5. Step 5: Solve for x
    x = 503,497,278,174.62/811,938.99
  6. Step 6: Final answer
    x = 620,117.13

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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.