Home / 628,324.74-942,130.06-428,886.54

Finding the Fourth Proportional to 628,324.74, 942,130.06 and 428,886.54

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Solution

The fourth proportional to 628,324.74, 942,130.06 and 428,886.54 is: 643,086.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,324.74 : 942,130.06 = 428,886.54 : x
  2. Step 2: Convert to fraction form
    628,324.74/942,130.06 = 428,886.54/x
  3. Step 3: Cross multiply
    628,324.74x = 942,130.06 × 428,886.54
  4. Step 4: Simplify right side
    628,324.74x = 404,066,901,663.39
  5. Step 5: Solve for x
    x = 404,066,901,663.39/628,324.74
  6. Step 6: Final answer
    x = 643,086.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.