Home / 1,284,372.90-1,926,948.06-485,899.20

Finding the Fourth Proportional to 1,284,372.90, 1,926,948.06 and 485,899.20

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Solution

The fourth proportional to 1,284,372.90, 1,926,948.06 and 485,899.20 is: 728,995.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284,372.90 : 1,926,948.06 = 485,899.20 : x
  2. Step 2: Convert to fraction form
    1,284,372.90/1,926,948.06 = 485,899.20/x
  3. Step 3: Cross multiply
    1,284,372.90x = 1,926,948.06 × 485,899.20
  4. Step 4: Simplify right side
    1,284,372.90x = 936,302,520,795.55
  5. Step 5: Solve for x
    x = 936,302,520,795.55/1,284,372.90
  6. Step 6: Final answer
    x = 728,995.86

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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.