Home / 639,212.12-957,637.20-322,913.60

Finding the Fourth Proportional to 639,212.12, 957,637.20 and 322,913.60

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Solution

The fourth proportional to 639,212.12, 957,637.20 and 322,913.60 is: 483,773.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,212.12 : 957,637.20 = 322,913.60 : x
  2. Step 2: Convert to fraction form
    639,212.12/957,637.20 = 322,913.60/x
  3. Step 3: Cross multiply
    639,212.12x = 957,637.20 × 322,913.60
  4. Step 4: Simplify right side
    639,212.12x = 309,234,075,745.92
  5. Step 5: Solve for x
    x = 309,234,075,745.92/639,212.12
  6. Step 6: Final answer
    x = 483,773.80

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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.