Home / 1,991,768.40-2,988,041.40-793,486.80

Finding the Fourth Proportional to 1,991,768.40, 2,988,041.40 and 793,486.80

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Solution

The fourth proportional to 1,991,768.40, 2,988,041.40 and 793,486.80 is: 1,190,385.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,991,768.40 : 2,988,041.40 = 793,486.80 : x
  2. Step 2: Convert to fraction form
    1,991,768.40/2,988,041.40 = 793,486.80/x
  3. Step 3: Cross multiply
    1,991,768.40x = 2,988,041.40 × 793,486.80
  4. Step 4: Simplify right side
    1,991,768.40x = 2,370,971,408,753.52
  5. Step 5: Solve for x
    x = 2,370,971,408,753.52/1,991,768.40
  6. Step 6: Final answer
    x = 1,190,385.09

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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.