Home / 817,288.67-1,127,829.96-449,731.46

Finding the Fourth Proportional to 817,288.67, 1,127,829.96 and 449,731.46

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Solution

The fourth proportional to 817,288.67, 1,127,829.96 and 449,731.46 is: 620,613.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    817,288.67 : 1,127,829.96 = 449,731.46 : x
  2. Step 2: Convert to fraction form
    817,288.67/1,127,829.96 = 449,731.46/x
  3. Step 3: Cross multiply
    817,288.67x = 1,127,829.96 × 449,731.46
  4. Step 4: Simplify right side
    817,288.67x = 507,220,614,542.54
  5. Step 5: Solve for x
    x = 507,220,614,542.54/817,288.67
  6. Step 6: Final answer
    x = 620,613.78

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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.