Home / 821,541.40-1,229,892.90-612,107.80

Finding the Fourth Proportional to 821,541.40, 1,229,892.90 and 612,107.80

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Solution

The fourth proportional to 821,541.40, 1,229,892.90 and 612,107.80 is: 916,359.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    821,541.40 : 1,229,892.90 = 612,107.80 : x
  2. Step 2: Convert to fraction form
    821,541.40/1,229,892.90 = 612,107.80/x
  3. Step 3: Cross multiply
    821,541.40x = 1,229,892.90 × 612,107.80
  4. Step 4: Simplify right side
    821,541.40x = 752,827,037,254.62
  5. Step 5: Solve for x
    x = 752,827,037,254.62/821,541.40
  6. Step 6: Final answer
    x = 916,359.22

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1.5x scale

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.