Home / 1,990,400.40-2,985,989.40-792,118.80

Finding the Fourth Proportional to 1,990,400.40, 2,985,989.40 and 792,118.80

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Solution

The fourth proportional to 1,990,400.40, 2,985,989.40 and 792,118.80 is: 1,188,332.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,990,400.40 : 2,985,989.40 = 792,118.80 : x
  2. Step 2: Convert to fraction form
    1,990,400.40/2,985,989.40 = 792,118.80/x
  3. Step 3: Cross multiply
    1,990,400.40x = 2,985,989.40 × 792,118.80
  4. Step 4: Simplify right side
    1,990,400.40x = 2,365,258,340,340.72
  5. Step 5: Solve for x
    x = 2,365,258,340,340.72/1,990,400.40
  6. Step 6: Final answer
    x = 1,188,332.93

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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.