Home / 621,106.14-857,156.88-349,259.61

Finding the Fourth Proportional to 621,106.14, 857,156.88 and 349,259.61

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Solution

The fourth proportional to 621,106.14, 857,156.88 and 349,259.61 is: 481,995.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,106.14 : 857,156.88 = 349,259.61 : x
  2. Step 2: Convert to fraction form
    621,106.14/857,156.88 = 349,259.61/x
  3. Step 3: Cross multiply
    621,106.14x = 857,156.88 × 349,259.61
  4. Step 4: Simplify right side
    621,106.14x = 299,370,277,617.62
  5. Step 5: Solve for x
    x = 299,370,277,617.62/621,106.14
  6. Step 6: Final answer
    x = 481,995.36

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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.