Home / 804,686.40-1,207,029.60-405,172.80

Finding the Fourth Proportional to 804,686.40, 1,207,029.60 and 405,172.80

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Solution

The fourth proportional to 804,686.40, 1,207,029.60 and 405,172.80 is: 607,759.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,686.40 : 1,207,029.60 = 405,172.80 : x
  2. Step 2: Convert to fraction form
    804,686.40/1,207,029.60 = 405,172.80/x
  3. Step 3: Cross multiply
    804,686.40x = 1,207,029.60 × 405,172.80
  4. Step 4: Simplify right side
    804,686.40x = 489,055,562,714.88
  5. Step 5: Solve for x
    x = 489,055,562,714.88/804,686.40
  6. Step 6: Final answer
    x = 607,759.20

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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.