Home / 621,120.19-857,125.86-349,199.50

Finding the Fourth Proportional to 621,120.19, 857,125.86 and 349,199.50

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Solution

The fourth proportional to 621,120.19, 857,125.86 and 349,199.50 is: 481,884.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,120.19 : 857,125.86 = 349,199.50 : x
  2. Step 2: Convert to fraction form
    621,120.19/857,125.86 = 349,199.50/x
  3. Step 3: Cross multiply
    621,120.19x = 857,125.86 × 349,199.50
  4. Step 4: Simplify right side
    621,120.19x = 299,307,921,749.07
  5. Step 5: Solve for x
    x = 299,307,921,749.07/621,120.19
  6. Step 6: Final answer
    x = 481,884.06

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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.