Home / 621,654.19-857,884.09-367,021.78

Finding the Fourth Proportional to 621,654.19, 857,884.09 and 367,021.78

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Solution

The fourth proportional to 621,654.19, 857,884.09 and 367,021.78 is: 506,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,654.19 : 857,884.09 = 367,021.78 : x
  2. Step 2: Convert to fraction form
    621,654.19/857,884.09 = 367,021.78/x
  3. Step 3: Cross multiply
    621,654.19x = 857,884.09 × 367,021.78
  4. Step 4: Simplify right side
    621,654.19x = 314,862,145,745.48
  5. Step 5: Solve for x
    x = 314,862,145,745.48/621,654.19
  6. Step 6: Final answer
    x = 506,490.83

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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.