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Finding the Fourth Proportional to 620,240.63, 855,905.55 and 362,131.90

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Solution

The fourth proportional to 620,240.63, 855,905.55 and 362,131.90 is: 499,726.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,240.63 : 855,905.55 = 362,131.90 : x
  2. Step 2: Convert to fraction form
    620,240.63/855,905.55 = 362,131.90/x
  3. Step 3: Cross multiply
    620,240.63x = 855,905.55 × 362,131.90
  4. Step 4: Simplify right side
    620,240.63x = 309,950,703,042.05
  5. Step 5: Solve for x
    x = 309,950,703,042.05/620,240.63
  6. Step 6: Final answer
    x = 499,726.54

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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.