Home / 811,934.74-1,120,461.69-449,359.30

Finding the Fourth Proportional to 811,934.74, 1,120,461.69 and 449,359.30

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Solution

The fourth proportional to 811,934.74, 1,120,461.69 and 449,359.30 is: 620,111.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,934.74 : 1,120,461.69 = 449,359.30 : x
  2. Step 2: Convert to fraction form
    811,934.74/1,120,461.69 = 449,359.30/x
  3. Step 3: Cross multiply
    811,934.74x = 1,120,461.69 × 449,359.30
  4. Step 4: Simplify right side
    811,934.74x = 503,489,880,695.22
  5. Step 5: Solve for x
    x = 503,489,880,695.22/811,934.74
  6. Step 6: Final answer
    x = 620,111.27

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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.