Home / 811,966.23-1,120,515.80-449,415.27

Finding the Fourth Proportional to 811,966.23, 1,120,515.80 and 449,415.27

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Solution

The fourth proportional to 811,966.23, 1,120,515.80 and 449,415.27 is: 620,194.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,966.23 : 1,120,515.80 = 449,415.27 : x
  2. Step 2: Convert to fraction form
    811,966.23/1,120,515.80 = 449,415.27/x
  3. Step 3: Cross multiply
    811,966.23x = 1,120,515.80 × 449,415.27
  4. Step 4: Simplify right side
    811,966.23x = 503,576,908,549.19
  5. Step 5: Solve for x
    x = 503,576,908,549.19/811,966.23
  6. Step 6: Final answer
    x = 620,194.40

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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.