Home / 403,926.80-605,890.20-123,443.60

Finding the Fourth Proportional to 403,926.80, 605,890.20 and 123,443.60

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Solution

The fourth proportional to 403,926.80, 605,890.20 and 123,443.60 is: 185,165.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,926.80 : 605,890.20 = 123,443.60 : x
  2. Step 2: Convert to fraction form
    403,926.80/605,890.20 = 123,443.60/x
  3. Step 3: Cross multiply
    403,926.80x = 605,890.20 × 123,443.60
  4. Step 4: Simplify right side
    403,926.80x = 74,793,267,492.72
  5. Step 5: Solve for x
    x = 74,793,267,492.72/403,926.80
  6. Step 6: Final answer
    x = 185,165.40

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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.