Home / 804,842.40-1,207,263.60-405,328.80

Finding the Fourth Proportional to 804,842.40, 1,207,263.60 and 405,328.80

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Solution

The fourth proportional to 804,842.40, 1,207,263.60 and 405,328.80 is: 607,993.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,842.40 : 1,207,263.60 = 405,328.80 : x
  2. Step 2: Convert to fraction form
    804,842.40/1,207,263.60 = 405,328.80/x
  3. Step 3: Cross multiply
    804,842.40x = 1,207,263.60 × 405,328.80
  4. Step 4: Simplify right side
    804,842.40x = 489,338,706,271.68
  5. Step 5: Solve for x
    x = 489,338,706,271.68/804,842.40
  6. Step 6: Final answer
    x = 607,993.20

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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.