Home / 621,120.65-857,141.33-349,189.75

Finding the Fourth Proportional to 621,120.65, 857,141.33 and 349,189.75

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Solution

The fourth proportional to 621,120.65, 857,141.33 and 349,189.75 is: 481,878.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,120.65 : 857,141.33 = 349,189.75 : x
  2. Step 2: Convert to fraction form
    621,120.65/857,141.33 = 349,189.75/x
  3. Step 3: Cross multiply
    621,120.65x = 857,141.33 × 349,189.75
  4. Step 4: Simplify right side
    621,120.65x = 299,304,966,737.37
  5. Step 5: Solve for x
    x = 299,304,966,737.37/621,120.65
  6. Step 6: Final answer
    x = 481,878.95

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1.5x scale

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.