Home / 828,405.39-1,143,206.31-465,826.11

Finding the Fourth Proportional to 828,405.39, 1,143,206.31 and 465,826.11

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Solution

The fourth proportional to 828,405.39, 1,143,206.31 and 465,826.11 is: 642,843.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    828,405.39 : 1,143,206.31 = 465,826.11 : x
  2. Step 2: Convert to fraction form
    828,405.39/1,143,206.31 = 465,826.11/x
  3. Step 3: Cross multiply
    828,405.39x = 1,143,206.31 × 465,826.11
  4. Step 4: Simplify right side
    828,405.39x = 532,535,343,154.31
  5. Step 5: Solve for x
    x = 532,535,343,154.31/828,405.39
  6. Step 6: Final answer
    x = 642,843.89

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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.