Home / 804,626.40-1,207,717.20-405,717.60

Finding the Fourth Proportional to 804,626.40, 1,207,717.20 and 405,717.60

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Solution

The fourth proportional to 804,626.40, 1,207,717.20 and 405,717.60 is: 608,968.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,626.40 : 1,207,717.20 = 405,717.60 : x
  2. Step 2: Convert to fraction form
    804,626.40/1,207,717.20 = 405,717.60/x
  3. Step 3: Cross multiply
    804,626.40x = 1,207,717.20 × 405,717.60
  4. Step 4: Simplify right side
    804,626.40x = 489,992,123,862.72
  5. Step 5: Solve for x
    x = 489,992,123,862.72/804,626.40
  6. Step 6: Final answer
    x = 608,968.49

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1.5x scale

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.