Home / 721,023.88-1,081,681.72-321,664.66

Finding the Fourth Proportional to 721,023.88, 1,081,681.72 and 321,664.66

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Solution

The fourth proportional to 721,023.88, 1,081,681.72 and 321,664.66 is: 482,562.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    721,023.88 : 1,081,681.72 = 321,664.66 : x
  2. Step 2: Convert to fraction form
    721,023.88/1,081,681.72 = 321,664.66/x
  3. Step 3: Cross multiply
    721,023.88x = 1,081,681.72 × 321,664.66
  4. Step 4: Simplify right side
    721,023.88x = 347,938,782,692.02
  5. Step 5: Solve for x
    x = 347,938,782,692.02/721,023.88
  6. Step 6: Final answer
    x = 482,562.08

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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.