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Finding the Fourth Proportional to 620,649.22, 856,496.28 and 348,717.10

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Solution

The fourth proportional to 620,649.22, 856,496.28 and 348,717.10 is: 481,229.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,649.22 : 856,496.28 = 348,717.10 : x
  2. Step 2: Convert to fraction form
    620,649.22/856,496.28 = 348,717.10/x
  3. Step 3: Cross multiply
    620,649.22x = 856,496.28 × 348,717.10
  4. Step 4: Simplify right side
    620,649.22x = 298,674,898,922.39
  5. Step 5: Solve for x
    x = 298,674,898,922.39/620,649.22
  6. Step 6: Final answer
    x = 481,229.80

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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.