Home / 620,860.29-857,021.27-362,821.02

Finding the Fourth Proportional to 620,860.29, 857,021.27 and 362,821.02

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Solution

The fourth proportional to 620,860.29, 857,021.27 and 362,821.02 is: 500,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,860.29 : 857,021.27 = 362,821.02 : x
  2. Step 2: Convert to fraction form
    620,860.29/857,021.27 = 362,821.02/x
  3. Step 3: Cross multiply
    620,860.29x = 857,021.27 × 362,821.02
  4. Step 4: Simplify right side
    620,860.29x = 310,945,329,528.99
  5. Step 5: Solve for x
    x = 310,945,329,528.99/620,860.29
  6. Step 6: Final answer
    x = 500,829.79

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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.