Home / 671,629.20-1,007,443.80-665,408.40

Finding the Fourth Proportional to 671,629.20, 1,007,443.80 and 665,408.40

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Solution

The fourth proportional to 671,629.20, 1,007,443.80 and 665,408.40 is: 998,112.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    671,629.20 : 1,007,443.80 = 665,408.40 : x
  2. Step 2: Convert to fraction form
    671,629.20/1,007,443.80 = 665,408.40/x
  3. Step 3: Cross multiply
    671,629.20x = 1,007,443.80 × 665,408.40
  4. Step 4: Simplify right side
    671,629.20x = 670,361,567,047.92
  5. Step 5: Solve for x
    x = 670,361,567,047.92/671,629.20
  6. Step 6: Final answer
    x = 998,112.60

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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.