Home / 628,717.38-867,743.21-370,579.25

Finding the Fourth Proportional to 628,717.38, 867,743.21 and 370,579.25

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Solution

The fourth proportional to 628,717.38, 867,743.21 and 370,579.25 is: 511,466.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,717.38 : 867,743.21 = 370,579.25 : x
  2. Step 2: Convert to fraction form
    628,717.38/867,743.21 = 370,579.25/x
  3. Step 3: Cross multiply
    628,717.38x = 867,743.21 × 370,579.25
  4. Step 4: Simplify right side
    628,717.38x = 321,567,626,101.50
  5. Step 5: Solve for x
    x = 321,567,626,101.50/628,717.38
  6. Step 6: Final answer
    x = 511,466.10

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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.