Home / 811,798.89-1,120,265.71-449,222.54

Finding the Fourth Proportional to 811,798.89, 1,120,265.71 and 449,222.54

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Solution

The fourth proportional to 811,798.89, 1,120,265.71 and 449,222.54 is: 619,917.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,798.89 : 1,120,265.71 = 449,222.54 : x
  2. Step 2: Convert to fraction form
    811,798.89/1,120,265.71 = 449,222.54/x
  3. Step 3: Cross multiply
    811,798.89x = 1,120,265.71 × 449,222.54
  4. Step 4: Simplify right side
    811,798.89x = 503,248,609,398.71
  5. Step 5: Solve for x
    x = 503,248,609,398.71/811,798.89
  6. Step 6: Final answer
    x = 619,917.83

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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.