Home / 628,664.40-867,676.50-356,757.57

Finding the Fourth Proportional to 628,664.40, 867,676.50 and 356,757.57

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Solution

The fourth proportional to 628,664.40, 867,676.50 and 356,757.57 is: 492,393.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,664.40 : 867,676.50 = 356,757.57 : x
  2. Step 2: Convert to fraction form
    628,664.40/867,676.50 = 356,757.57/x
  3. Step 3: Cross multiply
    628,664.40x = 867,676.50 × 356,757.57
  4. Step 4: Simplify right side
    628,664.40x = 309,550,159,686.11
  5. Step 5: Solve for x
    x = 309,550,159,686.11/628,664.40
  6. Step 6: Final answer
    x = 492,393.33

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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.