Home / 621,117.19-857,121.72-349,196.50

Finding the Fourth Proportional to 621,117.19, 857,121.72 and 349,196.50

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Solution

The fourth proportional to 621,117.19, 857,121.72 and 349,196.50 is: 481,879.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,117.19 : 857,121.72 = 349,196.50 : x
  2. Step 2: Convert to fraction form
    621,117.19/857,121.72 = 349,196.50/x
  3. Step 3: Cross multiply
    621,117.19x = 857,121.72 × 349,196.50
  4. Step 4: Simplify right side
    621,117.19x = 299,303,904,697.98
  5. Step 5: Solve for x
    x = 299,303,904,697.98/621,117.19
  6. Step 6: Final answer
    x = 481,879.92

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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.