Home / 811,487.79-1,119,825.77-443,963.36

Finding the Fourth Proportional to 811,487.79, 1,119,825.77 and 443,963.36

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Solution

The fourth proportional to 811,487.79, 1,119,825.77 and 443,963.36 is: 612,654.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    811,487.79 : 1,119,825.77 = 443,963.36 : x
  2. Step 2: Convert to fraction form
    811,487.79/1,119,825.77 = 443,963.36/x
  3. Step 3: Cross multiply
    811,487.79x = 1,119,825.77 × 443,963.36
  4. Step 4: Simplify right side
    811,487.79x = 497,161,612,043.54
  5. Step 5: Solve for x
    x = 497,161,612,043.54/811,487.79
  6. Step 6: Final answer
    x = 612,654.46

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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.