Home / 811,938.49-1,120,466.86-449,363.05

Finding the Fourth Proportional to 811,938.49, 1,120,466.86 and 449,363.05

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Solution

The fourth proportional to 811,938.49, 1,120,466.86 and 449,363.05 is: 620,116.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,938.49 : 1,120,466.86 = 449,363.05 : x
  2. Step 2: Convert to fraction form
    811,938.49/1,120,466.86 = 449,363.05/x
  3. Step 3: Cross multiply
    811,938.49x = 1,120,466.86 × 449,363.05
  4. Step 4: Simplify right side
    811,938.49x = 503,496,405,633.52
  5. Step 5: Solve for x
    x = 503,496,405,633.52/811,938.49
  6. Step 6: Final answer
    x = 620,116.44

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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.