Home / 804,712.20-1,205,318.70-489,784.20

Finding the Fourth Proportional to 804,712.20, 1,205,318.70 and 489,784.20

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Solution

The fourth proportional to 804,712.20, 1,205,318.70 and 489,784.20 is: 733,611.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    804,712.20 : 1,205,318.70 = 489,784.20 : x
  2. Step 2: Convert to fraction form
    804,712.20/1,205,318.70 = 489,784.20/x
  3. Step 3: Cross multiply
    804,712.20x = 1,205,318.70 × 489,784.20
  4. Step 4: Simplify right side
    804,712.20x = 590,346,055,224.54
  5. Step 5: Solve for x
    x = 590,346,055,224.54/804,712.20
  6. Step 6: Final answer
    x = 733,611.41

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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.