Home / 720,650.91-1,080,294.75-321,071.43

Finding the Fourth Proportional to 720,650.91, 1,080,294.75 and 321,071.43

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Solution

The fourth proportional to 720,650.91, 1,080,294.75 and 321,071.43 is: 481,303.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    720,650.91 : 1,080,294.75 = 321,071.43 : x
  2. Step 2: Convert to fraction form
    720,650.91/1,080,294.75 = 321,071.43/x
  3. Step 3: Cross multiply
    720,650.91x = 1,080,294.75 × 321,071.43
  4. Step 4: Simplify right side
    720,650.91x = 346,851,780,203.99
  5. Step 5: Solve for x
    x = 346,851,780,203.99/720,650.91
  6. Step 6: Final answer
    x = 481,303.47

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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.