Home / 685,514.40-1,028,271.60-404,887.20

Finding the Fourth Proportional to 685,514.40, 1,028,271.60 and 404,887.20

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Solution

The fourth proportional to 685,514.40, 1,028,271.60 and 404,887.20 is: 607,330.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,514.40 : 1,028,271.60 = 404,887.20 : x
  2. Step 2: Convert to fraction form
    685,514.40/1,028,271.60 = 404,887.20/x
  3. Step 3: Cross multiply
    685,514.40x = 1,028,271.60 × 404,887.20
  4. Step 4: Simplify right side
    685,514.40x = 416,334,008,963.52
  5. Step 5: Solve for x
    x = 416,334,008,963.52/685,514.40
  6. Step 6: Final answer
    x = 607,330.80

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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.