Home / 811,672.57-1,120,141.20-449,090.56

Finding the Fourth Proportional to 811,672.57, 1,120,141.20 and 449,090.56

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Solution

The fourth proportional to 811,672.57, 1,120,141.20 and 449,090.56 is: 619,763.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,672.57 : 1,120,141.20 = 449,090.56 : x
  2. Step 2: Convert to fraction form
    811,672.57/1,120,141.20 = 449,090.56/x
  3. Step 3: Cross multiply
    811,672.57x = 1,120,141.20 × 449,090.56
  4. Step 4: Simplify right side
    811,672.57x = 503,044,838,787.07
  5. Step 5: Solve for x
    x = 503,044,838,787.07/811,672.57
  6. Step 6: Final answer
    x = 619,763.26

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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.