Home / 1,243,634.20-1,865,451.30-865,720.60

Finding the Fourth Proportional to 1,243,634.20, 1,865,451.30 and 865,720.60

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Solution

The fourth proportional to 1,243,634.20, 1,865,451.30 and 865,720.60 is: 1,298,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,243,634.20 : 1,865,451.30 = 865,720.60 : x
  2. Step 2: Convert to fraction form
    1,243,634.20/1,865,451.30 = 865,720.60/x
  3. Step 3: Cross multiply
    1,243,634.20x = 1,865,451.30 × 865,720.60
  4. Step 4: Simplify right side
    1,243,634.20x = 1,614,959,618,706.78
  5. Step 5: Solve for x
    x = 1,614,959,618,706.78/1,243,634.20
  6. Step 6: Final answer
    x = 1,298,580.90

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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.