Home / 628,556.50-867,256.70-370,443.72

Finding the Fourth Proportional to 628,556.50, 867,256.70 and 370,443.72

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Solution

The fourth proportional to 628,556.50, 867,256.70 and 370,443.72 is: 511,123.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,556.50 : 867,256.70 = 370,443.72 : x
  2. Step 2: Convert to fraction form
    628,556.50/867,256.70 = 370,443.72/x
  3. Step 3: Cross multiply
    628,556.50x = 867,256.70 × 370,443.72
  4. Step 4: Simplify right side
    628,556.50x = 321,269,801,237.18
  5. Step 5: Solve for x
    x = 321,269,801,237.18/628,556.50
  6. Step 6: Final answer
    x = 511,123.19

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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.