Home / 809,810.03-1,118,043.28-515,625.78

Finding the Fourth Proportional to 809,810.03, 1,118,043.28 and 515,625.78

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Solution

The fourth proportional to 809,810.03, 1,118,043.28 and 515,625.78 is: 711,885.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    809,810.03 : 1,118,043.28 = 515,625.78 : x
  2. Step 2: Convert to fraction form
    809,810.03/1,118,043.28 = 515,625.78/x
  3. Step 3: Cross multiply
    809,810.03x = 1,118,043.28 × 515,625.78
  4. Step 4: Simplify right side
    809,810.03x = 576,491,939,935.09
  5. Step 5: Solve for x
    x = 576,491,939,935.09/809,810.03
  6. Step 6: Final answer
    x = 711,885.40

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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.